{"id":19428,"date":"2026-07-08T17:50:45","date_gmt":"2026-07-08T17:50:45","guid":{"rendered":"https:\/\/www.wideners.com\/blog\/?p=19428"},"modified":"2026-07-08T17:50:45","modified_gmt":"2026-07-08T17:50:45","slug":"sig-sauer-mcx-spear-review","status":"publish","type":"post","link":"https:\/\/www.wideners.com\/blog\/sig-sauer-mcx-spear-review\/","title":{"rendered":"Sig Sauer MCX Spear Review"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">The military&#8217;s adoption of the SIG Sauer MCX Spear sparked a serious dust-up. As with many issues these days, people have drawn their battle lines and chosen their sides. In this article, you\u2019ll get a full overview of the MCX Spear, insight into what the fuss is all about, and some understanding of whether this rifle is worth buying yourself.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The SIG Sauer MCX Spear is the rifle <\/span><span style=\"font-weight: 400;\">SIG Sauer<\/span><span style=\"font-weight: 400;\"> submitted to the military for consideration as the <\/span><a href=\"https:\/\/en.wikipedia.org\/wiki\/Next_Generation_Squad_Weapon\"><span style=\"font-weight: 400;\">Next Generation Squad Weapon (NGSW)<\/span><\/a><span style=\"font-weight: 400;\">. The rifle proved effective, and SIG was awarded the contract in 2022. The idea behind the MCX Spear was to offer a rifle for modern warfare\u2014one with more power, range, and battlefield adaptability than previous systems.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Did the SIG Sauer MCX deliver on all the promises? Well, they certainly delivered; however, whether they delivered something that satisfies all members of the firearm community is another story. Let&#8217;s get into it.<\/span><\/p>\n<h2><strong>Overview: SIG Sauer MCX Spear (Civilian Model)<\/strong><\/h2>\n<div id=\"attachment_19641\" style=\"width: 1034px\" class=\"wp-caption alignnone\"><img decoding=\"async\" aria-describedby=\"caption-attachment-19641\" class=\"wp-image-19641 size-full\" title=\"Sig Sauer MCX Spear\" src=\"https:\/\/www.wideners.com\/blog\/wp-content\/uploads\/DSC0867-Web-2.jpg\" alt=\"a detail photo of the Sig Sauer MCX Spear\" width=\"1024\" height=\"683\" srcset=\"https:\/\/www.wideners.com\/blog\/wp-content\/uploads\/DSC0867-Web-2.jpg 1024w, https:\/\/www.wideners.com\/blog\/wp-content\/uploads\/DSC0867-Web-2-300x200.jpg 300w, https:\/\/www.wideners.com\/blog\/wp-content\/uploads\/DSC0867-Web-2-768x512.jpg 768w, https:\/\/www.wideners.com\/blog\/wp-content\/uploads\/DSC0867-Web-2-790x527.jpg 790w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><p id=\"caption-attachment-19641\" class=\"wp-caption-text\">Multi-Caliber: The MCX Spear comes in a variety of centerfire calibers and tactical barrel lengths.<\/p><\/div>\n<p><span style=\"font-weight: 400;\">Before we go any further in discussing<\/span> <a href=\"https:\/\/www.sigsauer.com\/media\/sigsauer\/resources\/OPERATORS_MANUAL_MCX-SPEAR_4200452-01_REV_02_WEB_FILE.pdf\"><span style=\"font-weight: 400;\">the details of the SIG Sauer MCX Spear<\/span><\/a><span style=\"font-weight: 400;\">, let\u2019s get something out of the way: this is neither a rant nor a rave review. The goal of this article is to discuss what the MCX Spear was made to do, what it&#8217;s good at, what it&#8217;s not so good at, and where it fits within both a civilian and military arsenal.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">One more thing to keep in mind: whenever something new hits the market (be it a gun, a phone, a law, or even a restaurant), there&#8217;s a break-in phase as well as a honeymoon phase. On one side of the aisle, you have people who are averse to change and so upset about the shortcomings that they don&#8217;t even want to give the company a chance to correct them.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Of course, you also have people in the honeymoon phase. They&#8217;re excited about something new and want to find a way to accept it; however, these perspectives sometimes overlook important negative feedback.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The solution? Maybe we all lay down our stones (guns?) for a moment and meet in the middle. Then we could objectively look at the data and work to draw honest conclusions.<\/span><\/p>\n<p><strong>Here&#8217;s what we&#8217;ll cover in this article:<\/strong><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><b>History of the MCX Spear<\/b><\/li>\n<li style=\"font-weight: 400;\"><b>Specifications of the MCX Spear<\/b><\/li>\n<li style=\"font-weight: 400;\"><b>Special Options, Calibers, and Variations of the SIG Sauer MCX Spear<\/b><\/li>\n<li style=\"font-weight: 400;\"><b>Points of Controversy for the SIG Sauer MCX (And Military Version)<\/b><\/li>\n<li style=\"font-weight: 400;\"><b>Who Should Buy the SIG Sauer MCX Spear?<\/b><\/li>\n<\/ul>\n<p><b>Note:<\/b><span style=\"font-weight: 400;\"> Guns have many names. To keep this article from becoming confusing, we\u2019ll stick to two main names for this rifle: the M7 for the military version and the MCX Spear for the civilian model. We\u2019ll mention all the variants and updates where we can, but some are still placeholder names and may change in the future.<\/span><\/p>\n<h2><strong>History: SIG Sauer MCX Spear<\/strong><\/h2>\n<p><span style=\"font-weight: 400;\">The MCX Spear was born from the Army&#8217;s quest to update the M4 rifle. They began this program in 2017, and it wasn&#8217;t until 2022 that <\/span><a href=\"https:\/\/www.army.mil\/article\/264799\/army_moving_forward_with_next_generation_squad_weapon_program\"><span style=\"font-weight: 400;\">SIG won the contract<\/span><\/a><span style=\"font-weight: 400;\"> to produce the weapon.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">To understand how we got to where we are, we need to look at some of the pitfalls of the M4 chambered in 5.56. As it stands, 5.56 is a far cry from <\/span><a href=\"https:\/\/www.wideners.com\/rifle\/30-06-ammo\"><span style=\"font-weight: 400;\">the 30-06<\/span><\/a><span style=\"font-weight: 400;\"> that chambered the M1 Garand during WW2 and beyond. It&#8217;s much smaller, has less overall power, and has a limited range.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">On its face, all those things might seem like a bad thing. But as you&#8217;ll see, that all depends on the perspective. On the negative side, the military received complaints from troops who felt outgunned in certain situations. Let&#8217;s look at two examples.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">First, there was the issue of the kind of wide-open warfare often seen in the Middle East. Here, you might have soldiers ambushed in a vehicle. They would exit the vehicle and attempt to return fire, only to find they lacked the range needed to engage the enemy.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Second, the development of increasingly sophisticated body armor has raised concerns that the 5.56 is becoming less effective, particularly beyond 200-300 yards.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">All of these concerns are what led us to the MCX Spear. A gun that&#8217;s bigger, heavier, and ultimately more powerful. At what cost? We&#8217;ll talk about that a little later. Right now, let&#8217;s look at some specs.<\/span><\/p>\n<h2><strong>Specs: SIG Sauer MCX Spear<\/strong><\/h2>\n<div id=\"attachment_19639\" style=\"width: 1034px\" class=\"wp-caption alignnone\"><img decoding=\"async\" aria-describedby=\"caption-attachment-19639\" class=\"wp-image-19639 size-full\" title=\" sig sauer MCX spear and 277 fury ammo\" src=\"https:\/\/www.wideners.com\/blog\/wp-content\/uploads\/DSC0930-Web-3.jpg\" alt=\"a photo of the sig sauer MCX spear and 277 fury ammo\" width=\"1024\" height=\"683\" srcset=\"https:\/\/www.wideners.com\/blog\/wp-content\/uploads\/DSC0930-Web-3.jpg 1024w, https:\/\/www.wideners.com\/blog\/wp-content\/uploads\/DSC0930-Web-3-300x200.jpg 300w, https:\/\/www.wideners.com\/blog\/wp-content\/uploads\/DSC0930-Web-3-768x512.jpg 768w, https:\/\/www.wideners.com\/blog\/wp-content\/uploads\/DSC0930-Web-3-790x527.jpg 790w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><p id=\"caption-attachment-19639\" class=\"wp-caption-text\">Modular Mayhem: The MCX Spear can swap barrels to utilize a variety of centerfire cartridges.<\/p><\/div>\n<p><span style=\"font-weight: 400;\">In the next few sections, we&#8217;ll discuss some of the specifications of the MCX Spear. We&#8217;ll list the rifle&#8217;s major points and discuss the most common calibers. However, keep in mind that the very nature of this rifle begs for variation, so you&#8217;ll see specs vary depending on how the MCX is set up.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Also, we should point out that not all features available to the military will be available on the civilian market (fully automatic fire, for example). And features available on the civilian market may not come standard when you initially purchase the MCX Spear (e.g., optics, special ammunition).<\/span><\/p>\n<h3><strong>Here&#8217;s a quick overview of the specs on the SIG MCX Spear:<\/strong><\/h3>\n<ul>\n<li style=\"font-weight: 400;\"><b>Caliber Options<\/b><span style=\"font-weight: 400;\">: 7.62 x 51 NATO, 6.5 Creedmoor, 6.8 x 51 NATO (.277 SIG Fury)<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>Length overall<\/b><span style=\"font-weight: 400;\">: 38.1 Inches<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>Barrel Length:<\/b><span style=\"font-weight: 400;\"> 13 inches, 16 inches on some models<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>Weight<\/b><span style=\"font-weight: 400;\">: 9.2 lbs.<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>Controls Left or Right:<\/b><span style=\"font-weight: 400;\"> Fully ambidextrous<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>Charging Handle:<\/b><span style=\"font-weight: 400;\"> rear and side charging handles<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>Safety:<\/b><span style=\"font-weight: 400;\"> ambidextrous<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>Trigger:<\/b><span style=\"font-weight: 400;\"> Two-stage match trigger<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>Stock<\/b><span style=\"font-weight: 400;\">: 6-position foldable Magpul SL-M<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>Magazine capacity:<\/b><span style=\"font-weight: 400;\"> Ships with 20-round AR-10 magazines<\/span><\/li>\n<li style=\"font-weight: 400;\"><b>Cost<\/b><span style=\"font-weight: 400;\">: Price varies widely based on model and features<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Now let&#8217;s look at a few common variations and special options. If you enjoy little extras and bonuses, you&#8217;ll find many on the SIG MCX Spear.<\/span><\/p>\n<h2><strong>Special Options &amp; Variations for the SIG Sauer MCX Spear<\/strong><\/h2>\n<div id=\"attachment_19643\" style=\"width: 1034px\" class=\"wp-caption alignnone\"><img decoding=\"async\" aria-describedby=\"caption-attachment-19643\" class=\"wp-image-19643 size-full\" title=\"a rifle's folding stock \" src=\"https:\/\/www.wideners.com\/blog\/wp-content\/uploads\/DSC0874-Web.jpg\" alt=\"a photo of a rifle's folding stock \" width=\"1024\" height=\"683\" srcset=\"https:\/\/www.wideners.com\/blog\/wp-content\/uploads\/DSC0874-Web.jpg 1024w, https:\/\/www.wideners.com\/blog\/wp-content\/uploads\/DSC0874-Web-300x200.jpg 300w, https:\/\/www.wideners.com\/blog\/wp-content\/uploads\/DSC0874-Web-768x512.jpg 768w, https:\/\/www.wideners.com\/blog\/wp-content\/uploads\/DSC0874-Web-790x527.jpg 790w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><p id=\"caption-attachment-19643\" class=\"wp-caption-text\">The unique folding-stock design of the MCX Spear is made possible by eliminating the buffer tube.<\/p><\/div>\n<p><span style=\"font-weight: 400;\">On the civilian side of things, you can purchase the SIG MCX in three main variations: a short-barreled rifle with a 13-inch barrel, a pistol version also with a 13-inch barrel, and a longer-barreled rifle at 16 inches.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">On the pistol version, the folding stock isn&#8217;t standard. This option will also be the lightest of the bunch, at a sturdy 8.5 pounds. Other than these two differences, the pistol variation is essentially the same.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">With the 16-inch barrel version, you get pretty much all the same features as the 13-inch barrel, just with a slightly different forend.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">You may be wondering: what about a version chambered in SIG 277 Fury? Yep. It&#8217;s now available on the commercial market. Depending on why you&#8217;re interested in the MCX Spear (the platform or the round), this might be a reason for buying it. The 6.8x51mm is a spicy cartridge.<\/span><\/p>\n<h2><strong>Points of Controversy for the MCX Spear (Including the Military Version)<\/strong><\/h2>\n<p><span style=\"font-weight: 400;\">As we mentioned earlier, anytime there&#8217;s something new, there are positive and negative opinions. This is certainly the case with the MCX Spear. If we boil all the criticism down to one sentence, it would be: this is a good gun, but not for all situations.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">It seems that many think the military overcorrected for issues with the M4, and that the result may be impractical for mass use. Let\u2019s look at a few points of controversy regarding specific parts of the MCX Spear.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><b>More weight<\/b><\/li>\n<li style=\"font-weight: 400;\"><b>Less ammo carrying capacity<\/b><\/li>\n<li style=\"font-weight: 400;\"><b>Recoil and high internal pressures with a short barrel<\/b><\/li>\n<li style=\"font-weight: 400;\"><b>Misstep on armor penetration<\/b><\/li>\n<\/ul>\n<p><b>Key point:<\/b><span style=\"font-weight: 400;\"> Anytime the military adopts a new firearm, there will be both good and bad things. The hope is that when manufacturers receive feedback, they take it and make the necessary adjustments. When this happens, we can end up with a rifle that is actually much better than it was before.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">In fact, this is exactly what SIG has tried to do with the MCX\/M7 rifle. In new and forthcoming models, there are reports that they&#8217;ve taken steps to reduce weight by milling out excess material from the receiver, shortening the barrel, and shortening the suppressor.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">With these adjustments, people report a noticeable reduction in weight on the newest models. Some have said that the updated weapon feels better in the hand, is less front-heavy, and more easily maneuverable in tight places.<\/span><\/p>\n<h3><strong>Less Ammo Carrying Capacity &amp; More Overall Weight<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">Not only is the rifle bigger and heavier than the M4, but there&#8217;s concern that the larger cartridge reduces the number of rounds each soldier can carry. While this number will vary slightly based on the situation, reports are that soldiers can carry about 40 percent fewer rounds with the new firearm. Of course, the counter-argument is that these rounds are more effective at long distances.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Placing the reduced ability to carry ammunition aside, many believe the rifle was just too heavy overall. Whether this is true in a combat situation is hard to say. But these complaints must have had some merit, since newer variants of the gun now weigh less.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Recoil and High Internal Pressures<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">One of the selling points of the SIG MCX Spear is that it\u2019s built to withstand higher internal pressures, aiming to deliver greater power while remaining compact. There are many opinions on this, but some have raised an alarm about reported pressures ranging from 80,000 to 120,000 PSI.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">SIG seems to maintain that the rifle can handle these pressures. Critics state that this will negatively impact long-term reliability, particularly barrel life. They also mention that the increased recoil seems difficult to justify.<\/span><\/p>\n<h2><strong>Armor Penetration Methods\u00a0<\/strong><\/h2>\n<p><span style=\"font-weight: 400;\">The MCX Spear puts a premium on the ability to pierce armor. Many people understand this desire, as modern warfare has seen a jump in ballistic vest technology. However, some critics say that modern warfare has moved beyond the need for increased armor penetration in a standard-issue rifle. They state that drones will fill this need, particularly for long-range encounters\u2014but this is just one opinion.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Critics also argue that more attention should have been paid to the bullet design rather than cranking up the pressures. And even with the armor penetration of the MCX Spear, some people have voiced doubts about its effectiveness.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">What&#8217;s the response from SIG? SIG says the steel that civilians test their ammunition on is not comparable to the steel actually found on the battlefield. The types of armor that these weapons are designed for include light armored vehicles. The weapon <\/span><i><span style=\"font-weight: 400;\">isn&#8217;t<\/span><\/i><span style=\"font-weight: 400;\"> designed to take down tanks.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Opinions vary on whether this goal was accomplished, and some say that armor-piercing <\/span><i><span style=\"font-weight: 400;\">rounds<\/span><\/i><span style=\"font-weight: 400;\"> should have been a higher priority than the rifle&#8217;s overall power.<\/span><\/p>\n<h2>Suppressor Performance<\/h2>\n<div id=\"attachment_19645\" style=\"width: 1034px\" class=\"wp-caption alignnone\"><img decoding=\"async\" aria-describedby=\"caption-attachment-19645\" class=\"wp-image-19645 size-full\" src=\"https:\/\/www.wideners.com\/blog\/wp-content\/uploads\/DSC0860-Web.jpg\" alt=\"a photo of the \" width=\"1024\" height=\"683\" srcset=\"https:\/\/www.wideners.com\/blog\/wp-content\/uploads\/DSC0860-Web.jpg 1024w, https:\/\/www.wideners.com\/blog\/wp-content\/uploads\/DSC0860-Web-300x200.jpg 300w, https:\/\/www.wideners.com\/blog\/wp-content\/uploads\/DSC0860-Web-768x512.jpg 768w, https:\/\/www.wideners.com\/blog\/wp-content\/uploads\/DSC0860-Web-790x527.jpg 790w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><p id=\"caption-attachment-19645\" class=\"wp-caption-text\">The two-position adjustable gas system feels like a cheat code. You can run a suppressor and swap between grain weights with a simple twist.<\/p><\/div>\n<p>Suppressor enthusiasts should take note. The <span style=\"font-weight: 400;\">SIG MCX Spear is <\/span>one of the most suppressor-oriented battle rifles currently available. Unlike many AR-10 pattern rifles that simply <em data-start=\"185\" data-end=\"193\">accept<\/em> a suppressor, the Spear was designed from the outset to operate with one. In fact, the military M7 rifle issued to the U.S. Army is intended to be fielded with a suppressor as standard equipment. Sig&#8217;s own SLX model suppressor fulfills the contract for the standard issue M7.<\/p>\n<p>The short-stroke gas piston system has an adjustable gas regulator that&#8217;s easy to set up. The barrel <span data-subtree=\"aimfl,mfl\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Roboto, sans-serif; font-size: 16px; font-weight: 400; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);\">utilizes a standard 5\/8&#215;24 TPI thread pitch, making it compatible with a variety of .30 caliber cans. When suppressed, the rifle produces comparatively little gas blowback and offers a smoother shooting experience than many traditional AR-10-style rifles. That being said, the .277 Fury is a loud cartridge. You&#8217;ll still want to have your ears on when operating the rifle, even with heavier-grain ammunition.\u00a0<\/span><mark class=\"HxTRcb\" data-sfc-root=\"ep\" data-wiz-uids=\"ic362e_k\" data-sfc-cb=\"\" data-ved=\"2ahUKEwir9KPSkLKVAxU8K1kFHeEIAQoQuJAPegoIAAgACAAIBRAB\" data-sfc-inited=\"2\" data-complete=\"true\" data-copy-service-computed-style=\"font-family: &quot;Google Sans&quot;, Roboto, sans-serif; font-size: 16px; font-weight: 500; margin: 0px; text-decoration: none; border-bottom: 0px rgb(0, 29, 53);\"><!--qkimaf ic362e_j\/HugV6--><!--cqw1tb ic362e_j\/HugV6--><\/mark><\/p>\n<h2><strong>Who Should Buy the SIG Sauer MCX Spear?<\/strong><\/h2>\n<p><span style=\"font-weight: 400;\">After reading the last section, you might think that people don&#8217;t like this gun. On the contrary, almost everyone who\u2019s tested the firearm seems to walk away liking the system; they just think it might not be the best fit for mass-issue to the modern soldier.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">It\u2019s worth noting that many of these complaints come from a military perspective. As a civilian, issues about armor penetration and weight become somewhat less important.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">With all that said, who should consider buying the SIG MCX Spear?<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Well, if you&#8217;re a collector who enjoys military rifles, then this is a no-brainer. Also, if you&#8217;re a civilian who has had frustrations with the &#8220;underpowered 5.56,&#8221; and maybe even has an eye on hunting with the platform, then the MCX Spear gives you a robust option for firing<\/span><a href=\"https:\/\/www.wideners.com\/rifle\/308-ammo\"> <span style=\"font-weight: 400;\">the higher-powered 308<\/span><\/a><span style=\"font-weight: 400;\"> and 277 Fury. Finally, there&#8217;s no doubt that the SIG MCX passes the &#8220;cool&#8221; test, so if you&#8217;ve got the cash, it could end up being one of your favorite guns to take to the range.<\/span><\/p>\n<h2><strong>Last Take: Getting to Know the SIG Sauer MCX Spear<\/strong><\/h2>\n<div id=\"attachment_19635\" style=\"width: 1034px\" class=\"wp-caption alignnone\"><img decoding=\"async\" aria-describedby=\"caption-attachment-19635\" class=\"wp-image-19635 size-full\" title=\"a man shooting a MCX Spear rifle\" src=\"https:\/\/www.wideners.com\/blog\/wp-content\/uploads\/DSC1248-Web.jpg\" alt=\"a photo of a man shooting a MCX Spear rifle\" width=\"1024\" height=\"576\" srcset=\"https:\/\/www.wideners.com\/blog\/wp-content\/uploads\/DSC1248-Web.jpg 1024w, https:\/\/www.wideners.com\/blog\/wp-content\/uploads\/DSC1248-Web-300x169.jpg 300w, https:\/\/www.wideners.com\/blog\/wp-content\/uploads\/DSC1248-Web-768x432.jpg 768w, https:\/\/www.wideners.com\/blog\/wp-content\/uploads\/DSC1248-Web-790x444.jpg 790w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><p id=\"caption-attachment-19635\" class=\"wp-caption-text\">If a multi-caliber, suppressor-friendly, modular AR-10 is on your wish list, the SIG Sauer MCX Spear is a great option.<\/p><\/div>\n<p><span style=\"font-weight: 400;\">The MCX Spear was recently adopted by the Army as part of its Next Generation Squad Weapon Program. The vision behind the MCX was a more powerful, further-reaching battle rifle that wouldn&#8217;t limit soldiers as they meet the modern battlefield.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The MCX Spear offers big power in a relatively small package. For all the controversy you may hear about this rifle, the truth is that new things elicit both positive and negative reactions. SIG is still working out the details\u2014we would expect this rifle to be even better in the years to come. For what it&#8217;s worth, most people who handle this rifle seem to like it.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If you like all this rifle talk, look at our article on<\/span><a href=\"https:\/\/www.wideners.com\/blog\/what-is-an-ar-10-battle-rifle\/\"> <span style=\"font-weight: 400;\">the AR-10 battle rifle<\/span><\/a><span style=\"font-weight: 400;\">.\u00a0 <\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The military&#8217;s adoption of the SIG Sauer MCX Spear sparked a serious dust-up. As with many issues these days, people have drawn their battle lines and chosen their sides. In this article, you\u2019ll get a full overview of the MCX Spear, insight into what the fuss is all about, and some understanding of whether this [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":19651,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[396],"tags":[3603,1902,1905,3587,708,1092,195,2245,3580,3581,3582,3583,3586,1187,3584,3347,1035,3604,3605,1147,3318,3319,3585,505],"class_list":["post-19428","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-reviews","tag-3603","tag-277-fury","tag-277-fury-ammo","tag-adjustable-gas-system","tag-ar-10","tag-ar-10-rifle","tag-battle-rifle","tag-gas-piston","tag-mcx","tag-mcx-platform","tag-modular-rifle","tag-modular-rifle-system","tag-multiple-calibers","tag-piston-driven","tag-rifle-suppressor","tag-sbr","tag-sig-sauer","tag-sig-sauer-mcx","tag-sig-sauer-mcx-speer","tag-speer","tag-subsonic","tag-supersonic","tag-suppressed-rifle","tag-suppressor"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Sig Sauer MCX Spear Review<\/title>\n<meta name=\"description\" content=\"Wondering what the fuss is about regarding the Sig Sauer MCX Spear? Read all about the debate and decide whether it belongs in your gun rack.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wideners.com\/blog\/sig-sauer-mcx-spear-review\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Sig Sauer MCX Spear Review\" \/>\n<meta property=\"og:description\" content=\"Wondering what the fuss is about regarding the Sig Sauer MCX Spear? Read all about the debate and decide whether it belongs in your gun rack.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wideners.com\/blog\/sig-sauer-mcx-spear-review\/\" \/>\n<meta property=\"og:site_name\" content=\"Wideners Shooting, Hunting &amp; Gun Blog\" \/>\n<meta property=\"article:published_time\" content=\"2026-07-08T17:50:45+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.wideners.com\/blog\/wp-content\/uploads\/DSC0851-Web-2.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"683\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Jacob\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Jacob\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"12 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.wideners.com\\\/blog\\\/sig-sauer-mcx-spear-review\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.wideners.com\\\/blog\\\/sig-sauer-mcx-spear-review\\\/\"},\"author\":{\"name\":\"Jacob\",\"@id\":\"https:\\\/\\\/www.wideners.com\\\/blog\\\/#\\\/schema\\\/person\\\/d2abdb8d05ffcd8d8dfdc82eceac8d85\"},\"headline\":\"Sig Sauer MCX Spear Review\",\"datePublished\":\"2026-07-08T17:50:45+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.wideners.com\\\/blog\\\/sig-sauer-mcx-spear-review\\\/\"},\"wordCount\":2347,\"image\":{\"@id\":\"https:\\\/\\\/www.wideners.com\\\/blog\\\/sig-sauer-mcx-spear-review\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.wideners.com\\\/blog\\\/wp-content\\\/uploads\\\/DSC0851-Web-2.jpg\",\"keywords\":[\"277\",\"277 Fury\",\"277 Fury ammo\",\"adjustable gas system\",\"AR-10\",\"ar-10 rifle\",\"battle rifle\",\"gas piston\",\"MCX\",\"MCX platform\",\"modular rifle\",\"modular rifle system\",\"multiple calibers\",\"Piston Driven\",\"rifle suppressor\",\"SBR\",\"Sig Sauer\",\"SIG Sauer MCX\",\"SIG Sauer MCX Speer\",\"speer\",\"subsonic\",\"supersonic\",\"suppressed rifle\",\"suppressor\"],\"articleSection\":[\"Reviews\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.wideners.com\\\/blog\\\/sig-sauer-mcx-spear-review\\\/\",\"url\":\"https:\\\/\\\/www.wideners.com\\\/blog\\\/sig-sauer-mcx-spear-review\\\/\",\"name\":\"Sig Sauer MCX Spear Review\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.wideners.com\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.wideners.com\\\/blog\\\/sig-sauer-mcx-spear-review\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.wideners.com\\\/blog\\\/sig-sauer-mcx-spear-review\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.wideners.com\\\/blog\\\/wp-content\\\/uploads\\\/DSC0851-Web-2.jpg\",\"datePublished\":\"2026-07-08T17:50:45+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/www.wideners.com\\\/blog\\\/#\\\/schema\\\/person\\\/d2abdb8d05ffcd8d8dfdc82eceac8d85\"},\"description\":\"Wondering what the fuss is about regarding the Sig Sauer MCX Spear? 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