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AR15 Ammo For Sale

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Your AR-15 is only as good as the ammo you feed it. Whether you're training, hunting, or stocking up, we've got reliable 223 Rem and 5.56 NATO rounds in stock and ready to ship. Learn More
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  1. Winchester 5.56x45 Ammo - 20 Rounds of 62 Grain FMJ M855 Ammunition

    Image of Winchester 5.56x45 Ammo - 20 Rounds of 62 Grain FMJ M855 Ammunition
    $14.89

    1 Review

    72 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type Penetrator
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 3060 FPS
    Muzzle Energy 1289 ft lbs

  2. PMC 5.56x45 Ammo - 20 Rounds of 62 Grain Penetrator Ammunition

    Image of PMC 5.56x45 Ammo - 20 Rounds of 62 Grain Penetrator Ammunition
    $14.99

    5 Reviews

    135 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type Penetrator
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 2920 FPS
    Muzzle Energy 1174 ft lbs
    • 20 Rounds
    • 74.9¢ per round
    • Made by PMC

  3. 5.56x45 - 62 Grain FMJ - Hornady BLACK - 20 Rounds

    Image of 5.56x45 - 62 Grain FMJ - Hornady BLACK - 20 Rounds
    $19.99

    1 Review

    103 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type FMJ
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 3060 FPS
    Muzzle Energy 1289 ft lbs
    • 20 Rounds
    • $1 per round
    • Made by Hornady

  4. PMC X-TAC 5.56x45 Ammo - 120 Rounds of 62 Grain FMJ M855 Ammunition

    Image of PMC X-TAC 5.56x45 Ammo - 120 Rounds of 62 Grain FMJ M855 Ammunition
    $74.99
    Add Review

    70 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type Penetrator
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 3100 FPS
    Muzzle Energy 1323 ft lbs
    • 120 Rounds
    • 62.5¢ per round
    • Made by PMC

  5. Winchester 5.56x45 Ammo - 150 Rounds of 62 Grain FMJ M855 Ammunition

    Image of Winchester 5.56x45 Ammo - 150 Rounds of 62 Grain FMJ M855 Ammunition
    $94.99
    Add Review

    128 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type Penetrator
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 3060 FPS
    Muzzle Energy 1289 ft lbs
    • 150 Rounds
    • 63.3¢ per round
    • Made by Winchester

  6. Black Hills Ammunition 5.56 Ammo - 50 Rounds of 62 Grain Barnes TSX Ammunition

    Image of Black Hills Ammunition 5.56 Ammo - 50 Rounds of 62 Grain Barnes TSX Ammunition
    $97.99
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    82 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type TSX
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 3000 FPS
    Muzzle Energy 1239 ft lbs
    • 50 Rounds
    • $1.96 per round
    • Made by Black Hills Ammunition

  7. Black Hills Ammunition 5.56x45 Ammo - 50 Rounds of 62 Grain Dual Performance Ammunition

    Image of Black Hills Ammunition 5.56x45 Ammo - 50 Rounds of 62 Grain Dual Performance Ammunition
    $99.99
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    42 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type SCHP
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 3000 FPS
    Muzzle Energy 1239 ft lbs
    • 50 Rounds
    • $2 per round
    • Made by Black Hills Ammunition

  8. Winchester 5.56x45 Ammo - 200 Rounds of 62 Grain FMJ M855 Ammunition

    Image of Winchester 5.56x45 Ammo - 200 Rounds of 62 Grain FMJ M855 Ammunition
    $124.99

    1 Review

    96 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type Penetrator
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 3060 FPS
    Muzzle Energy 1289 ft lbs
    • 200 Rounds
    • 62.5¢ per round
    • Made by Winchester

  9. Hornady BLACK 5.56x45 Ammo - 200 Rounds of 62 Grain FMJ Ammunition

    Image of Hornady BLACK 5.56x45 Ammo - 200 Rounds of 62 Grain FMJ Ammunition

    $189.99

    $174.99

    1 Review

    50 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type FMJ
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 3060 FPS
    Muzzle Energy 1289 ft lbs
    • 200 Rounds
    • 87.5¢ per round
    • Made by Hornady

  10. Winchester 5.56x45 Ammo - 600 Rounds of 62 Grain FMJ M855 Ammunition

    Image of Winchester 5.56x45 Ammo - 600 Rounds of 62 Grain FMJ M855 Ammunition

    $349.99

    $304.99

    Add Review

    96 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type Penetrator
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 3060 FPS
    Muzzle Energy 1289 ft lbs
    • 600 Rounds
    • 50.8¢ per round
    • Made by Winchester

  11. PMC 5.56x45 Ammo - 600 Rounds of 62 Grain FMJ Ammunition

    Image of PMC 5.56x45 Ammo - 600 Rounds of 62 Grain FMJ Ammunition
    $339.99
    Add Review

    17 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type Penetrator
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 3100 FPS
    Muzzle Energy 1323 ft lbs
    • 600 Rounds
    • 56.7¢ per round
    • Made by PMC

  12. Winchester 5.56x45 Ammo - 800 Rounds of 62 Grain FMJ M855 Ammunition

    Image of Winchester 5.56x45 Ammo - 800 Rounds of 62 Grain FMJ M855 Ammunition

    $454.99

    $409.99

    1 Review

    65 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type Penetrator
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 3060 FPS
    Muzzle Energy 1289 ft lbs
    • 800 Rounds
    • 51.2¢ per round
    • Made by Winchester

  13. PMC X-TAC 5.56x45 Ammo - 840 Rounds of 62 Grain FMJ M855 Ammunition in Ammo Can

    Image of PMC X-TAC 5.56x45 Ammo - 840 Rounds of 62 Grain FMJ M855 Ammunition in Ammo Can
    $469.99
    Add Review

    65 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type Penetrator
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 3100 FPS
    Muzzle Energy 1323 ft lbs
    • 840 Rounds
    • 55.9¢ per round
    • Made by PMC

  14. PMC 5.56x45 Ammo - 1000 Rounds of 62 Grain Penetrator Ammunition

    Image of PMC 5.56x45 Ammo - 1000 Rounds of 62 Grain Penetrator Ammunition

    $511.99

    $494.99

    12 Reviews

    60 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type Penetrator
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 2920 FPS
    Muzzle Energy 1174 ft lbs
    • 1000 Rounds
    • 49.5¢ per round
    • Made by PMC

  15. Winchester 5.56x45 Ammo - 1000 Rounds of 62 Grain FMJ M855 Ammunition

    Image of Winchester 5.56x45 Ammo - 1000 Rounds of 62 Grain FMJ M855 Ammunition

    $544.99

    $509.99

    Add Review

    81 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type Penetrator
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 3060 FPS
    Muzzle Energy 1289 ft lbs

  16. Black Hills Ammunition 5.56x45 Ammo - 500 Rounds of 62 Grain TSX Ammunition

    Image of Black Hills Ammunition 5.56x45 Ammo - 500 Rounds of 62 Grain TSX Ammunition
    $949.99

    1 Review

    1 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type TSX
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 3000 FPS
    Muzzle Energy 1239 ft lbs
    • 500 Rounds
    • $1.9 per round
    • Made by Black Hills Ammunition

  17. Black Hills Ammunition 5.56x45 Ammo - 500 Rounds of 62 Grain Dual Performance Ammunition

    Image of Black Hills Ammunition 5.56x45 Ammo - 500 Rounds of 62 Grain Dual Performance Ammunition
    $989.00
    Add Review

    1 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type Dual Performance
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 3000 FPS
    Muzzle Energy 1239 ft lbs
    • 500 Rounds
    • $1.98 per round
    • Made by Black Hills Ammunition

Overview of AR15 Ammo

Whether you run a 223 Remington or 5.56 in your AR‑15, choosing ammo that matches your barrel twist and mission is critical. This category offers everything from lightweight 55‑grain plinking rounds to high‑performance 77‑grain match-grade and polymer-tipped hunting loads. Begin browsing or stock up with confidence — our bulk AR-15 ammo page has you covered for practice or protection.

Looking for volume? Shop our 223 bulk ammo or 5.56 bulk deals to save while topping off your range bag.

Top Brand Picks for AR‑15 Shooters

  • Hornady 5.56 ammo: Ideal for hunters and long-range shooters with options like the .223 VARMAGEDDON and 77‑grain BTHP match loads.
  • Hornady 223 ammo: Home defense and critical duty rounds like Critical Duty, plus accurate Match 75‑grain .223 loads.
  • Federal 223 ammo: Availability you can count on, with popular 55‑grain XM193-type and 77‑grain Sierra MatchKing rounds.
  • Federal 5.56 ammo: Battle-grade performance with dependable loads like Green Tip and Gold Medal Match.

Ballistics at a Glance

Understanding trajectory and energy can help you pick the right round for your AR setup. For detailed velocity, drop, and energy charts, check out our 223 ballistics tables and 5.56 ballistics tables. These breakdowns highlight how heavy bullets retain energy further versus lighter, faster rounds.

Sam Jacobs
Written by
Sam Jacobs

Customer Reviews

Click To Purchase This 5.56x45 Winchester Ammunition
Winchester 5.56x45 Ammo - 20 Rounds of 62 Grain FMJ M855 Ammunition
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  • Darrell said:

    Man this ammo can in, in a matter of days nice quality

Click To Purchase This 5.56x45 PMC Ammunition
PMC 5.56x45 Ammo - 20 Rounds of 62 Grain Penetrator Ammunition
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  • Alan said:

    Product was shiped in a timely mannner was well packaged and performed perfectly

  • Carl said:

    Will be ordering more I am very satisfied with the delivery and price ammo shoots good

  • AZ SHOTGUN said:

    Great ammo for the price.

  • Nate said:

    The ammo itself LOOKS beautiful compared to Lake City penetrators but I have not shot it yet so I can't comment on that. I paid more per round, but that is just the market, not Ammo.com.

  • Bigthiss said:

    Great ammunition for the price. I used to buy the federal loose bulk ammo in 500 and 1000 but there were always at least 10-20 that were either faulty loads or misfired. This ammo is hands down the best for the price that I have purchased and shot. Highly recommend!!

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Click To Purchase This 5.56x45 Hornady Ammunition
5.56x45 - 62 Grain FMJ - Hornady BLACK - 20 Rounds
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  • Ernest said:

    Great price good rounds straight A across the board

Click To Purchase This 5.56x45 Winchester Ammunition
Winchester 5.56x45 Ammo - 200 Rounds of 62 Grain FMJ M855 Ammunition
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  • Head hunter said:

    Shoots amazing accurate and plenty of knock down power for plucking down rodents such as ground hogs . You can reach out and touch something with accuracy and confidence .

Click To Purchase This 5.56x45 Hornady Ammunition
Hornady BLACK 5.56x45 Ammo - 200 Rounds of 62 Grain FMJ Ammunition
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  • Bru said:

    It's Hornady Black. Goes down range well, gives decent groups at 50 & 100 Yards through a Hellion. It's not Match grade but it is consistent for my usage. Good prices and quick shipping is always a bonus too! Thanks Ammo.com

Click To Purchase This 5.56x45 Winchester Ammunition
Winchester 5.56x45 Ammo - 800 Rounds of 62 Grain FMJ M855 Ammunition
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  • RONALD said:

    No surprise here but the price per round shows as 63.8 cents. With shipping and sales tax, that easily went to about 85 cents. I did receive it in a timely fashion and it was well-padded in a cardboard box but would have preferred different packing from the factory. My error. A range pack means loose rounds inside a box. The ammo itself is so-so for its intended purpose. I also purchased Belom 7.62x39 (no longer available here) and cannot address ammo quality yet, but the factory packaging (20 rounds per PLASTIC case) was phenomenal.

Click To Purchase This 5.56x45 PMC Ammunition
PMC 5.56x45 Ammo - 1000 Rounds of 62 Grain Penetrator Ammunition
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  • Ken said:

    I've been using PMC ammo for about 40 years. NEVER had a problem with it and AMMO.COM has good prices too.

  • SAL said:

    LOVE THIS PLACE FOR MY AMMO. I AM ABLE TO DONATE TO WOUNDED WORRIER AND GET AMMO CAN'T BEAT IT.

  • Brian said:

    My son and I have shot thousands of rounds of the PMC with no complaints whatsoever. And you won't find a better deal on 62 gr 556 bulk ammo anywhere

  • Shooter said:

    The ammo performed awesome.

  • Bone Crusher said:

    Shoots straight, flying fast.

  • T-bag said:

    For the price and quality, never thought I'd be using green tips as target rounds. My AR hasn't jammed up yet after 100 rounds or so, which is impressive. My AR is very picky on ammo, usually can't get 30 rounds out without a couple jams. But this stuff runs like butter through my AR, with some impressive penetration to boot.

  • Mick said:

    All ammo went down range with consistent velocity and tight groupings. Previously purchased ammo from another party had poorly seated primers, this jamming my fire arm.

  • olbull said:

    same as title

  • john said:

    good product / good price

  • Snake said:

    Great ammo! Shoots and cycles perfect. Will defiantly buy more.

  • lroberts103 said:

    Great company to work with. Fast shipping great price

  • Michael said:

    This 5.56 ammo was just what my AR needed.

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Click To Purchase This 5.56x45 Black Hills Ammunition Ammunition
Black Hills Ammunition 5.56x45 Ammo - 500 Rounds of 62 Grain TSX Ammunition
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  • edward said:

    We fired over 300 rds on the range from 15 to 100 yards. The Black Hills 556 and 223 is absolutely the finest rifle ammo our agency ever used. It will save your life if ever in a gun battle with bad guys.