223 (5.56) Ammo

.223 Remington ammunition and 5.56x45 NATO are closely related and sometimes interchangeable cartridges depending on the firearm they are to be used with. Manufacturers typically offer guidance on this point. In general, the 5.56 NATO ammunition the military uses and is for sale to the civilian market operates at higher pressures than .223 Remington ammo. Most, but not all, AR-15s are chambered for 5.56 NATO and can fire both types of ammo.

Many loads in both calibers follow the M193 or M855 standard, both of which are military specifications. M193 ammo typically fires a 55 grain full metal jacket bullet at 3,240 feet per second, while M855 ammo fires a heavier 62 grain FMJ bullet at about 3,100 feet per second. These common standards are very helpful when sighting in your optics and you'll find both cartridges in-stock and available in cheap bulk packs here at Widener's

Certain specialized loads deviate from these common standards. Competition grade .223/5.56 ammo fires a heavier bullet (most commonly a Sierra MatchKing) in the 77 grain range to provide better stability and more predictable trajectories; varmint loads, on the other hand, fire light 30-40 grain bullets at very high velocities to produce lethal fragmentation against pest animals.

One of the most sought after range loads for this caliber is Lake City ammunition, which is produced by Federal Premium Ammunition at the Lake City Army Ammunition Plant in Independence, Missouri. LCAAP production is typically excess from government contracts and is popular due to its military origins and high quality.

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10 product(s)

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  1. Red Army Standard 223 Rem 55 Grain FMJ – 20 Rounds

    $14.85

    In stock

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    Manufacturer Red Army Standard
    Condition New
    Bullet Weight 55 Grain
    Bullet Type Full Metal Jacket (FMJ)
    Use Type plinking at the range
    Casing Type Steel
    Quantity 20
    Ammo Caliber 223 Remington
    Manufacturer SKU AM3089
    Primer Type Berdan
    Magnetic Yes
    UPC Barcode 787450579842
    Cost Per Round 74.3¢ per round

    This 223 Rem ammo by Red Army Standard isn’t a “steal” per se – you still have to pay for it. But its price tag is indeed a lot lower than usual, and that’s because it contains so much steel!

    Red Army Standard’s AR-15 ammo is loaded with 55 grain bullets, giving it in-flight and terminal ballistics comparable to that of the American Armed Forces’s tried and true M193 load. Really, what sets this ammo’s bullet apart from the crowd is its bimetal jacket. It’s a cost-effective design because most of the copper is removed from the jacket, but because it is replaced with steel it does draw a magnet. Check your indoor range’s rules before taking magnetic ammo there!

    Red Army Standard’s case is also made of steel, with a thin, heat-resistant polymer coating that helps it glide in and out of a rifle’s chamber with greater efficiency. There are several reasons why reloading steel cases is impractical, especially when they are outfitted with Berdan primers. Red Army Standard’s primers are absolutely non-corrosive, though, so they don’t threaten a rifle with rust damage.

  2. IMI 5.56x45mm 55 Grain FMJBT - 30 Rounds

    $24.00

    In stock

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    Manufacturer Israeli Military Industries
    Condition New
    Bullet Weight 55 Grain
    Bullet Type Full Metal Jacket (FMJ)
    Use Type plinking at the range
    Casing Type Brass
    Quantity 30
    Ammo Caliber 5.56x45mm
    Manufacturer SKU IMI556x45mm55FMJ
    Primer Type Boxer
    Magnetic No
    UPC Barcode 556x4555FMJIMIS
    Cost Per Round 80.0¢ per round

    If you desire high-quality performance in your AR-15 rifle, these IMI 5.56 rounds will give you excellent accuracy and smooth feeding. With one of these boxes, you’ll get 30 rounds that use full metal jackets and a boat tail bullet. IMI is a military contractor in Israel that produced rounds for their military so you know you're getting rounds that will deliver good ballistic performance and reliable feeding/ejection. In other words, these 55-grain bullets will meet your high standards.

    Many gun owners choose to load military surplus ammunition because it delivers a higher level of consistency and performance. If you demand the best for your rifles, order a few boxes of these military surplus rounds.

    Developed for accuracy and consistency in military rifles, the 5.56x45mm is one of the most commonly-loaded cartridges in the world. Used by numerous nations, including Germany, the United States, the United Kingdom, and Canada, this round has a reputation for outstanding accuracy with manageable recoil. While it is similar to the .223 Remington, it is a different and separate cartridge.

    Customer Reviews

    Fast service.

    Fast service. Received basically overnight. Have not used them yet. Inventory replenishment.

    Review by N (Posted on 4/11/2021)

    high quality

    No failures after the first thousand rounds. Very clean when I compare it to alternates in same price range. Great grouping at 100 yards but cannot get less than 4 " groups at 200 yards with a Leupold rifleman scope and AR 15s in a bench vice, but I think this is more operator and scope related. I feel it is a great target round for the price and highly recommend it. JHB

    Review by JHB (Posted on 3/3/2016)

  3. Wolf Gold 5.56x45 62 Grain FMJ M855 – 20 Rounds

    $16.85

    In stock

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    Manufacturer Wolf
    Condition New
    Bullet Weight 62 Grain
    Bullet Type Penetrator
    Use Type home defense, plinking at the range
    Casing Type Brass
    Quantity 20
    Ammo Caliber 5.56x45mm
    Manufacturer SKU M855
    Primer Type Boxer
    Magnetic Yes
    UPC Barcode 645611610462
    Cost Per Round 84.3¢ per round

    While there is no gold in this 5.56x45 cartridge, it does feature a metal even more precious to handloaders – brass. That’s right, this is Wolf ammo you can actually reload!

    But it’s still magnetic, because this is M855 ammunition. Each round’s 62 grain bullet conceals a steel spike in its tip, giving it a far greater likelihood of penetrating sheet metal over several hundred yards. It’s not armor piercing per se, but still far more suitable for engaging armored targets or cast aside car parts. And although this is an M855 round, its muzzle velocity is more comparable to an M193 at 3,250 fps. Make sure your barrel twists at 1:9 or 1:8 to get the best accuracy out of this round’s slightly heavier bullet!

    This round’s brass case is discolored around the neck because it has been heat-treated for superior suppleness, but not subsequently buffed out. (It may say 223 Rem on the headstamp, but it is indeed 5.56x45.) Wolf’s primer is a non-corrosive Boxer to prevent rusting or frustration at the reloading bench.

    Customer Reviews

    The best

    I have ordered more then 2 times and we’ll keep it going. shipping is fast and reliable ammunition.

    Review by Thomas (Posted on 3/21/2021)

  4. Winchester USA 5.56x45 55 Grain FMJ M193 – 20 Rounds

    $18.85

    In stock

    • Buy 10 at $17.00 /each and save
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    Manufacturer Winchester
    Condition New
    Bullet Weight 55 Grain
    Bullet Type Full Metal Jacket (FMJ)
    Use Type plinking at the range
    Casing Type Brass
    Quantity 20
    Ammo Caliber 5.56x45mm
    Manufacturer SKU WM193K
    Primer Type Boxer
    Magnetic No
    UPC Barcode 020892201880
    Cost Per Round 85.0¢ to 94.3¢ per round

    Twenty rounds. One magazine. This single box of 5.56x45 ammunition by Winchester is all you need to demonstrate your mastery of your AR-15 rifle – or save the day.

    Winchester didn’t make this ammo for the military, but they did make it to the military’s M193 specifications. That means it has the 5.56’s traditional 55 grain FMJ bullet, which has a solid lead core and hard copper alloy jacket. This type of bullet is most popular for target shooting, although it’s not at all unsuitable for self-defense (it’s just not as effective as an expanding bullet like a soft point or polymer tip). This smooth-feeding bullet also features a cannelure, which keeps it right where it’s meant to be seated in its case.

    That case is made of solid brass and has never before seen the light of day. You can see where its neck and shoulder were annealed, which is a heat-treatment process that makes brass more elastic. That’s why this ammo’s cases expand so reliably to seal the chamber during ignition, and also why they make great reloading components. This ammo is both nonmagnetic and non-corrosive for versatile and clean performance.

  5. Hornady Frontier 223 Rem 55 Grain HP Match – 20 Rounds

    $21.50

    In stock

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    Manufacturer Hornady
    Condition New
    Bullet Weight 55 Grain
    Bullet Type Hollow-Point (HP)
    Use Type match or precision shooting, plinking at the range
    Casing Type Brass
    Quantity 20
    Ammo Caliber 223 Remington
    Manufacturer SKU FR140
    Primer Type Boxer
    Magnetic No
    UPC Barcode 090255711349
    Cost Per Round $1.08 per round

    This Frontier label 223 Rem ammunition by Hornady is great for all the long-distance shooters out there. It showcases the Nebraskan master’s HP Match, which is basically 55 grains of nothing but accuracy-enhancing features.

    The HP Match’s swaged lead core is highly uniform, and doesn’t possess air pockets that could impact its balance. Its AMP jacket is drawn with virtually zero runout or variations in its wall thickness. The HP Match is also extremely sleek, from its narrow meplat to its secant ogive geometry to its sloping boat tail.

    This round’s HP Match bursts out of a 24” barrel at a velocity of 3,240 fps. So well-balanced and streamlined a bullet exhibits a G1 BC of 0.254, and can be counted on to remain supersonic beyond 700 yards. Whether you’re shooting targets or varmints, so flat a trajectory is certain to come in very handy.

    The Lake City Army Ammunition Plant loads this AR-15 ammo. Widener’s customers who can’t get enough brass are sure to find a good use for this ammo’s new production cases, which are visibly annealed and long-lasting. Lake City’s military-grade primers, propellant and loading practices deliver reliable performance however you shoot!

  6. Hornady Frontier 223 Rem 68 Grain BTHP Match – 20 Rounds

    $22.85

    In stock

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    Manufacturer Hornady
    Condition New
    Bullet Weight 68 Grain
    Bullet Type Hollow-Point Boat Tail (HP-BT)
    Use Type match or precision shooting, plinking at the range, varmint hunting
    Casing Type Brass
    Quantity 20
    Ammo Caliber 223 Remington
    Manufacturer SKU FR160
    Primer Type Boxer
    Magnetic No
    UPC Barcode 090255711387
    Cost Per Round $1.14 per round

    The American frontier is gone, but Hornady Frontier keeps going strong! This is the 223 Rem ammo you want to chamber when accuracy is key – grouping tight shots through paper, or landing a single bullet clean between a gopher’s peepers.

    Hornady utilizes their industry’s most advanced loading equipment and protocol when they piece together a Frontier load. This American-made ammo’s brass cases are military-grade, and you can see by their annealing that they’re poised to reload several times. This ammo’s primers are also military-grade, which promotes consistent ballistics along with its uniform propellant charges and bullet weights.

    Each bullet is Hornady’s accurate BTHP Match. It features its manufacturer’s Advanced Manufacturing Process jacket and a form-fitted swaged lead core, both of which enhance in-flight stability to ensure the meplat is always pointed at its target. The BTHP Match’s secant ogive profile, boat tail and narrow hollow point meplat all decrease in-flight drag to flatten trajectory. Zero in at 200 yards and you can expect only 7.5” of bullet drop at 300!

    The BTHP Match’s hollow point doesn’t affect terminal ballistics by creating expansion. The impact of a 68 grain bullet alone ought to take care of most varmint hunting and self-defense applications, though.

    Customer Reviews

    Good Quality and Great Service

    After spending a couple of hours looking for a decent price on 68 grain .223 BTHP ammo that was in stock, I finally found Widener's site, and they actually had it in stock. This ammo is pricy everywhere, but Widener's had it available for about a nickel per round below the next best price. I immediately placed an order, and the shipment showed up two days before I expected it. I will definitely look forward to looking to Widener's when I've saved up enough money for another purchase.

    Review by Michael C. (Posted on 4/7/2021)

  7. Hornady Frontier 5.56x45 68 Grain BTHP Match – 20 Rounds

    $23.85

    In stock

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    Manufacturer Hornady
    Condition New
    Bullet Weight 68 Grain
    Bullet Type Hollow-Point Boat Tail (HP-BT)
    Use Type home defense, match or precision shooting, plinking at the range, varmint hunting
    Casing Type Brass
    Quantity 20
    Ammo Caliber 5.56x45mm
    Manufacturer SKU FR310
    Primer Type Boxer
    Magnetic No
    UPC Barcode 090255711608
    Cost Per Round $1.19 per round

    The American Frontier no longer exists, but Hornady Frontier is alive and well. We’ve got a bunch of it in our warehouse, as a matter of fact, and it’s ready for action whether you’ve got long-distance shooting, varmint detail or home defense in your plans!

    This 5.56x45 cartridge is designed to turn any AR-15 into a capable sniper rifle. It’s furnished with a heavyweight 68 grain bullet. It’ll stabilize best out of a rifle with a 1:8 barrel twist, but a little faster or slower twist will be okay as well. As a boat tail hollow point this bullet features a ballistically efficient profile and balanced, uniformly distributed lead core. It won’t expand inside of its target, but it’s certain to get there courtesy of its match grade accuracy.

    Frontier ammo is non-corrosive, nonmagnetic, and made in America. This ammo’s military-grade brass cases are consistently drawn and chambered to help them reliably weave in and out of a chamber, and you can rest assured they’re good for handloading.

  8. Federal LE Tactical 223 Rem 55 Grain SP - 20 Rounds

    $29.85

    In stock

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    Manufacturer Federal
    Condition New
    Bullet Weight 55 Grain
    Bullet Type Soft-Point (SP)
    Use Type home defense, plinking at the range
    Casing Type Brass
    Quantity 20
    Ammo Caliber 223 Remington
    Manufacturer SKU T223A
    Primer Type Boxer
    Magnetic No
    UPC Barcode 029465095154
    Cost Per Round $1.49 per round

    This Federal Tactical 223 Rem ammunition is custom made for your urban rifle. Law Enforcement need something that will absolutely provide knockdown power and precision under extreme situations. This ammunition is designed for use in semi-automatic rifles and meets mil-spec qualifications for optimum functioning. Each round contains a soft point bullet and shoots a muzzle velocity of 3,220 feet per second.

    Federal ammunition is headquartered in Anoka, Minnesota and manufactures a complete line of shotshell, centerfire, and rimfire ammunition. Federal is a legendary brand that has built a reputation on solid, reliable, and superior ammunition. You need the best, your life depends on it. Grab a few boxes today - you will be glad you did!

    Customer Reviews

    Fast delivery and great follow up service.

    I placed my order on Saturday afternoon and received an email early Monday morning that my order was on its way. I also received an email asking on my thoughts and how my experience went when placing this order. This company is definitely top-notch. While other companies are making excuses for delayed shipping companies like this one are getting it done as soon as possible and doing a follow up with their customers! 5, stars for your company.

    Review by Nacho (Posted on 5/3/2021)

    First Time Purchase

    Dealing with the folks at Widener’s was a pleasure.I was looking for LE grade .223 Ammo which other dealers simply didn’t have. Widener’s website indicated their stock supply was good which a telephone call to them confirmed. The order was placed on a Saturday, and the following Monday afternoon the Fed Ex delivery person walked up on my front porch with my order! I will certainly use Wideners again for my future ammunition needs. Great folks!

    Review by G-Man (Posted on 8/2/2020)

  9. Winchester Varmint-X 223 Rem 40 Grain PT - 20 Rounds

    $30.15

    In stock

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    Manufacturer Winchester
    Condition New
    Bullet Weight 40 Grain
    Bullet Type Polymer Tipped
    Use Type varmint hunting
    Casing Type Brass
    Quantity 20
    Ammo Caliber 223 Remington
    Manufacturer SKU X223P1
    Primer Type Boxer
    UPC Barcode 020892219953
    Cost Per Round $1.51 per round

    The 223 Rem has been around since the Vietnam War when it was invented to give the American soldiers the advantage over the communist enemy and has remained popular ever since among militaries, law enforcement agencies, and civilians. Whether you are looking to train at the range, compete in a shooting match, defend yourself, or put food on the table, the 223 Rem offers the lightweight, low recoil, high speed round you need to get the job done.

    With over one hundred fifty years of experience, Winchester knows how to make some of the best ammunition in the country and has been one of the most popular and trusted ammo manufacturers since its founding. These Winchester Varmint-X, 40 grain, polymer tip, brass cased, boxer primed rounds fire at 3700 feet per second and hit with incredible expansion, making it incredibly lethal against the pesky varmints that scurry around your home. When you have a varmint problem, these Winchester Varmint-X, fast, accuracy, and deadly rounds are perfect for you.

  10. Black Hills Ammunition 5.56 NATO 62 Grain Barnes TSX HP - 50 Rounds

    $75.46

    In stock

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    Manufacturer Black Hills Ammunition
    Condition New
    Bullet Weight 62 Grain
    Bullet Type TSX
    Use Type home defense, hunting boar, hunting whitetail deer, varmint hunting
    Casing Type Brass
    Quantity 50
    Ammo Caliber 5.56x45mm
    Manufacturer SKU D556N18
    Primer Type Boxer
    Magnetic No
    UPC Barcode 612710129621
    Cost Per Round $1.51 per round

    A versatile load suited for defense and hunting applications, this 5.56 NATO ammunition from Black Hills is the perfect choice for multipurpose AR-15s and other .223/5.56 rifles.

    Each round in this box of 50 fires a 62 grain Barnes TSX hollow point bullet at 3,000 feet per second. The TSX is a solid copper design with a grooved shank that absorbs expanding bullet material to reduce fouling and chamber pressures. It delivers very strong expansion, a key benefit in this relatively low-caliber cartridge. External ballistics of this load are comparable to (and somewhat more consistent than) those of M855 ball.

    Black Hills is a renowned supplier of defensive and sporting ammo and counts all branches of the US military among its customers. Their products are made in Rapid City, South Dakota using non-corrosive primers and re-loadable brass.

10 product(s)