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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. Hornady Frontier 5.56x45 Ammo - 1000 Rounds of 55 Grain FMJ M193 Ammunition

    Image of Hornady Frontier 5.56x45 Ammo - 1000 Rounds of 55 Grain FMJ M193 Ammunition

    $494.99

    $469.99

    1 Review

    66 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type FMJ-BT
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 3240 FPS
    Muzzle Energy 1282 ft lbs
    • 1000 Rounds
    • 47¢ per round
    • Made by Hornady

  2. Hornady American Gunner 223 Ammo - 500 Rounds of 55 Grain HP Ammunition

    Image of Hornady American Gunner 223 Ammo - 500 Rounds of 55 Grain HP Ammunition
    $459.99
    Add Review

    3 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type HP
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 3240 FPS
    Muzzle Energy 1282 ft lbs
    • 500 Rounds
    • 92¢ per round
    • Made by Hornady

  3. Hornady Frontier 5.56x45 Ammo - 500 Rounds of 75 Grain BTHP Match Ammunition

    Image of Hornady Frontier 5.56x45 Ammo - 500 Rounds of 75 Grain BTHP Match Ammunition

    $369.99

    $349.99

    1 Review

    85 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type HPBT
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 2910 FPS
    Muzzle Energy 1410 ft lbs
    • 500 Rounds
    • 70¢ per round
    • Made by Hornady

  4. Hornady Frontier 223 Ammo - 500 Rounds of 68 Grain BTHP Match Ammunition

    Image of Hornady Frontier 223 Ammo - 500 Rounds of 68 Grain BTHP Match Ammunition
    $318.99
    Add Review

    16 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type HPBT
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 2960 FPS
    Muzzle Energy 1323 ft lbs
    • 500 Rounds
    • 63.8¢ per round
    • Made by Hornady

  5. Hornady Frontier 223 Ammo - 500 Rounds of 55 Grain FMJ Ammunition

    Image of Hornady Frontier 223 Ammo - 500 Rounds of 55 Grain FMJ Ammunition
    $308.99
    Add Review

    4 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 3240 FPS
    Muzzle Energy 1282 ft lbs
    • 500 Rounds
    • 61.8¢ per round
    • Made by Hornady

  6. Hornady 223 Ammo - 200 Rounds of 75 Grain HPBT Ammunition

    Image of Hornady 223 Ammo - 200 Rounds of 75 Grain HPBT Ammunition
    $289.99
    Add Review

    7 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type HPBT
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 2930 FPS
    Muzzle Energy 1429 ft lbs
    • 200 Rounds
    • $1.45 per round
    • Made by Hornady

  7. Hornady Frontier 223 Ammo - 500 Rounds of 55 Grain HP Match Ammunition

    Image of Hornady Frontier 223 Ammo - 500 Rounds of 55 Grain HP Match Ammunition
    $289.99

    2 Reviews

    24 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type HP
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 3240 FPS
    Muzzle Energy 1282 ft lbs
    • 500 Rounds
    • 58¢ per round
    • Made by Hornady

  8. Hornady Frontier 5.56x45 Ammo - 500 Rounds of 55 Grain HP Match Ammunition

    Image of Hornady Frontier 5.56x45 Ammo - 500 Rounds of 55 Grain HP Match Ammunition
    $284.99

    1 Review

    71 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type HP
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 3240 FPS
    Muzzle Energy 1282 ft lbs
    • 500 Rounds
    • 57¢ per round
    • Made by Hornady

  9. Hornady Critical Defense 223 Ammo - 200 Rounds of 73 Grain FTX Ammunition

    Image of Hornady Critical Defense 223 Ammo - 200 Rounds of 73 Grain FTX Ammunition
    $269.99
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    10 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type FTX
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 2790 FPS
    Muzzle Energy 1262 ft lbs
    • 200 Rounds
    • $1.35 per round
    • Made by Hornady

  10. Hornady 5.56x45 Ammo - 200 Rounds of 75 Grain HPBT Ammunition

    Image of Hornady 5.56x45 Ammo - 200 Rounds of 75 Grain HPBT Ammunition
    $264.99
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    6 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type HPBT
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 2910 FPS
    Muzzle Energy 1410 ft lbs
    • 200 Rounds
    • $1.32 per round
    • Made by Hornady

  11. Hornady 223 Ammo - 500 Rounds of 55 Grain FMJ-BT Ammunition

    Image of Hornady 223 Ammo - 500 Rounds of 55 Grain FMJ-BT Ammunition
    $259.99

    3 Reviews

    23 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type FMJ-BT
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 3240 FPS
    Muzzle Energy 1282 ft lbs
    • 500 Rounds
    • 52¢ per round
    • Made by Hornady

  12. Hornady Superformance Varmint 223 Ammo - 200 Rounds of 53 Grain Polymer Tipped Ammunition

    Image of Hornady Superformance Varmint 223 Ammo - 200 Rounds of 53 Grain Polymer Tipped Ammunition
    $254.99
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    13 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type V-MAX
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 3465 FPS
    Muzzle Energy 1413 ft lbs
    • 200 Rounds
    • $1.27 per round
    • Made by Hornady

  13. Hornady Frontier 5.56x45 Ammo - 500 Rounds of 55 Grain FMJ M193 Ammunition

    Image of Hornady Frontier 5.56x45 Ammo - 500 Rounds of 55 Grain FMJ M193 Ammunition
    $253.99

    1 Review

    57 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 3240 FPS
    Muzzle Energy 1282 ft lbs
    • 500 Rounds
    • 50.8¢ per round
    • Made by Hornady

  14. Hornady 223 Ammo - 200 Rounds of 55 Grain V-MAX Ammunition

    Image of Hornady 223 Ammo - 200 Rounds of 55 Grain V-MAX Ammunition
    $249.99
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    7 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type V-MAX
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 3240 FPS
    Muzzle Energy 1282 ft lbs
    • 200 Rounds
    • $1.25 per round
    • Made by Hornady

  15. Hornady BLACK 5.56x45 Ammo - 200 Rounds of 75 Grain InterLock HD SBR Ammunition

    Image of Hornady BLACK 5.56x45 Ammo - 200 Rounds of 75 Grain InterLock HD SBR Ammunition
    $234.99

    1 Review

    56 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type SP
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 2321 FPS
    Muzzle Energy 897 ft lbs
    • 200 Rounds
    • $1.17 per round
    • Made by Hornady

  16. Hornady BLACK 223 Ammo - 200 Rounds of 75 Grain BTHP Match Ammunition

    Image of Hornady BLACK 223 Ammo - 200 Rounds of 75 Grain BTHP Match Ammunition
    $199.99
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    31 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type HPBT
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 2790 FPS
    Muzzle Energy 1296 ft lbs
    • 200 Rounds
    • $1 per round
    • Made by Hornady

  17. 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

  18. Hornady BLACK 223 Ammo - 200 Rounds of 62 Grain FMJ Ammunition

    Image of Hornady BLACK 223 Ammo - 200 Rounds of 62 Grain FMJ Ammunition
    $169.99
    Add Review

    33 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 3100 FPS
    Muzzle Energy 1323 ft lbs
    • 200 Rounds
    • 85¢ per round
    • Made by Hornady

  19. Hornady Frontier 223 Ammo - 150 Rounds of 55 Grain FMJ Ammunition

    Image of Hornady Frontier 223 Ammo - 150 Rounds of 55 Grain FMJ Ammunition
    $74.99
    Add Review

    122 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 3240 FPS
    Muzzle Energy 1282 ft lbs
    • 150 Rounds
    • 50¢ per round
    • Made by Hornady

  20. Hornady American Gunner 223 Ammo - 50 Rounds of 55 Grain HP Ammunition

    Image of Hornady American Gunner 223 Ammo - 50 Rounds of 55 Grain HP Ammunition
    $47.99
    Add Review

    2 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type HP
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 3240 FPS
    Muzzle Energy 1282 ft lbs
    • 50 Rounds
    • 96¢ per round
    • Made by Hornady

  21. Hornady Critical Defense 223 Ammo - 20 Rounds of 73 Grain FTX Ammunition

    Image of Hornady Critical Defense 223 Ammo - 20 Rounds of 73 Grain FTX Ammunition
    $29.99
    Add Review

    112 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type FTX
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 2790 FPS
    Muzzle Energy 1262 ft lbs
    • 20 Rounds
    • $1.5 per round
    • Made by Hornady

  22. Hornady 223 Ammo - 20 Rounds of 73 Grain ELD Match Ammunition

    Image of Hornady 223 Ammo - 20 Rounds of 73 Grain ELD Match Ammunition
    $28.99
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    114 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type ELD Match
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 2790 FPS
    Muzzle Energy 1262 ft lbs
    • 20 Rounds
    • $1.45 per round
    • Made by Hornady

  23. Hornady 223 Ammo - 20 Rounds of 75 Grain HPBT Ammunition

    Image of Hornady 223 Ammo - 20 Rounds of 75 Grain HPBT Ammunition
    $27.99
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    61 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type HPBT
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 2790 FPS
    Muzzle Energy 1296 ft lbs
    • 20 Rounds
    • $1.4 per round
    • Made by Hornady

  24. Hornady 223 Ammo - 20 Rounds of 35 Grain Polymer Tipped Ammunition

    Image of Hornady 223 Ammo - 20 Rounds of 35 Grain Polymer Tipped Ammunition
    $27.99
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    38 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type NTX
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 4000 FPS
    Muzzle Energy 1243 ft lbs
    • 20 Rounds
    • $1.4 per round
    • Made by Hornady

  25. Hornady 223 Ammo - 20 Rounds of 55 Grain V-MAX Ammunition

    Image of Hornady 223 Ammo - 20 Rounds of 55 Grain V-MAX Ammunition
    $27.99
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    1 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type V-MAX
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 3240 FPS
    Muzzle Energy 1282 ft lbs
    • 20 Rounds
    • $1.4 per round
    • Made by Hornady

  26. Hornady 223 Ammo - 20 Rounds of 53 Grain V-MAX Ammunition

    Image of Hornady 223 Ammo - 20 Rounds of 53 Grain V-MAX Ammunition
    $26.99
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    32 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type V-MAX
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 3465 FPS
    Muzzle Energy 1413 ft lbs
    • 20 Rounds
    • $1.35 per round
    • Made by Hornady

  27. Hornady 223 Ammo - 20 Rounds of 75 Grain HPBT Ammunition

    Image of Hornady 223 Ammo - 20 Rounds of 75 Grain HPBT Ammunition
    $25.99
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    2 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type HPBT
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 2930 FPS
    Muzzle Energy 1429 ft lbs
    • 20 Rounds
    • $1.3 per round
    • Made by Hornady

  28. Hornady BLACK 223 Ammo - 20 Rounds of 75 Grain BTHP Match Ammunition

    Image of Hornady BLACK 223 Ammo - 20 Rounds of 75 Grain BTHP Match Ammunition
    $21.99
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    18 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type HPBT
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 2790 FPS
    Muzzle Energy 1296 ft lbs
    • 20 Rounds
    • $1.1 per round
    • Made by Hornady

  29. 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

  30. Hornady BLACK 223 Ammo - 20 Rounds of 62 Grain FMJ Ammunition

    Image of Hornady BLACK 223 Ammo - 20 Rounds of 62 Grain FMJ Ammunition
    $18.99

    1 Review

    13 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 3100 FPS
    Muzzle Energy 1323 ft lbs
    • 20 Rounds
    • 94.9¢ per round
    • Made by Hornady

  31. Hornady Frontier 5.56x45 Ammo - 20 Rounds of 75 Grain BTHP Match Ammunition

    Image of Hornady Frontier 5.56x45 Ammo - 20 Rounds of 75 Grain BTHP Match Ammunition
    $17.99

    1 Review

    81 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type HPBT
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 2910 FPS
    Muzzle Energy 1410 ft lbs
    • 20 Rounds
    • 89.9¢ per round
    • Made by Hornady

  32. Hornady Frontier 223 Ammo - 20 Rounds of 68 Grain BTHP Match Ammunition

    Image of Hornady Frontier 223 Ammo - 20 Rounds of 68 Grain BTHP Match Ammunition
    $16.99
    Add Review

    41 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type HPBT
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 2960 FPS
    Muzzle Energy 1323 ft lbs
    • 20 Rounds
    • 84.9¢ per round
    • Made by Hornady

  33. Hornady Frontier 223 Ammo - 20 Rounds of 55 Grain HP Match Ammunition

    Image of Hornady Frontier 223 Ammo - 20 Rounds of 55 Grain HP Match Ammunition
    $14.99
    Add Review

    72 In stock now

    1 2 3 4 5 6 7 8 9 +10
    Bullet type HP
    Primer Type Boxer
    Casing Type Brass
    Condition New
    Muzzle Velocity 3240 FPS
    Muzzle Energy 1282 ft lbs
    • 20 Rounds
    • 74.9¢ per round
    • Made by Hornady

  34. Hornady Frontier 5.56x45 Ammo - 20 Rounds of 55 Grain FMJ M193 Ammunition

    Image of Hornady Frontier 5.56x45 Ammo - 20 Rounds of 55 Grain FMJ M193 Ammunition
    $13.49
    Add Review

    123 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 3240 FPS
    Muzzle Energy 1282 ft lbs
    • 20 Rounds
    • 67.4¢ per round
    • Made by Hornady

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 Hornady Ammunition
Hornady Frontier 5.56x45 Ammo - 1000 Rounds of 55 Grain FMJ M193 Ammunition
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  • Aaron M said:

    Hornady it great ammo.

Click To Purchase This 5.56x45 Hornady Ammunition
Hornady Frontier 5.56x45 Ammo - 500 Rounds of 75 Grain BTHP Match Ammunition
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  • Zachary said:

    Works great out of my 11.5" bcm and my 18" 1:8 twist barrel consistent groups and no issues.

Click To Purchase This 223 Hornady Ammunition
Hornady Frontier 223 Ammo - 500 Rounds of 55 Grain HP Match Ammunition
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  • Boostrapbill said:

    I would buy again. I check ammo.com first for everything I need.

  • Defend said:

    Ammo is as advertised. Good ammo

Click To Purchase This 5.56x45 Hornady Ammunition
Hornady Frontier 5.56x45 Ammo - 500 Rounds of 55 Grain HP Match Ammunition
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  • Jim said:

    None

Click To Purchase This 223 Hornady Ammunition
Hornady 223 Ammo - 500 Rounds of 55 Grain FMJ-BT Ammunition
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  • Dave said:

    Good quality

  • Brian said:

    No problems feeding, cycling or firing. Not a one. 500 rounds in and buying more. AR-15 platform.

  • Bang bang said:

    Great ammo, great price

Click To Purchase This 5.56x45 Hornady Ammunition
Hornady Frontier 5.56x45 Ammo - 500 Rounds of 55 Grain FMJ M193 Ammunition
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  • CDH said:

    Shipped quickly Haven't had a chance to send some down range. But sure they'll be fine

Click To Purchase This 5.56x45 Hornady Ammunition
Hornady BLACK 5.56x45 Ammo - 200 Rounds of 75 Grain InterLock HD SBR Ammunition
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  • ROLAND said:

    Not a lot of gas blow back. Nice and smooth out the barrel and suppressor. Over all highly impressed

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

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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 223 Hornady Ammunition
Hornady BLACK 223 Ammo - 20 Rounds of 62 Grain FMJ Ammunition
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  • Gavin said:

    No Miss fires at all.A Preformed like Expected.

Click To Purchase This 5.56x45 Hornady Ammunition
Hornady Frontier 5.56x45 Ammo - 20 Rounds of 75 Grain BTHP Match Ammunition
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  • CAP said:

    Great ammo, Accurate, shot 11/2” Group at 300yrds