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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 - 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

    133 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

  2. Winchester USA 5.56x45 Ammo - 20 Rounds of 55 Grain FMJ M193 Ammunition

    Image of Winchester USA 5.56x45 Ammo - 20 Rounds of 55 Grain FMJ M193 Ammunition
    $13.49

    2 Reviews

    35 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 3180 FPS
    Muzzle Energy 1235 ft lbs

  3. PMC 5.56x45 Ammo - 20 Rounds of 55 Grain FMJ Ammunition

    Image of PMC 5.56x45 Ammo - 20 Rounds of 55 Grain FMJ Ammunition
    $13.99

    1 Review

    101 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 3120 FPS
    Muzzle Energy 1189 ft lbs
    • 20 Rounds
    • 69.9¢ per round
    • Made by PMC

  4. Igman 5.56x45 Ammo - 20 Rounds of 55 Grain FMJ M193 Ammunition

    Image of Igman 5.56x45 Ammo - 20 Rounds of 55 Grain FMJ M193 Ammunition
    $14.99
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    70 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 3180 FPS
    Muzzle Energy 1235 ft lbs
    • 20 Rounds
    • 74.9¢ per round
    • Made by Igman Ammunition

  5. 5.56x45 - 62 Grain FMJ - Hornady BLACK - 20 Rounds

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

    1 Review

    96 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

  6. Winchester USA 5.56x45 Ammo - 150 Rounds of 55 Grain FMJ Ammunition

    Image of Winchester USA 5.56x45 Ammo - 150 Rounds of 55 Grain FMJ Ammunition
    $85.99

    1 Review

    134 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 3180 FPS
    Muzzle Energy 1235 ft lbs
    • 150 Rounds
    • 57.3¢ per round
    • Made by Winchester

  7. Winchester USA 5.56x45 Ammo - 200 Rounds of 55 Grain FMJ M193 Ammunition

    Image of Winchester USA 5.56x45 Ammo - 200 Rounds of 55 Grain FMJ M193 Ammunition
    $109.99
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    71 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 3270 FPS
    Muzzle Energy 1306 ft lbs

  8. 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

    $164.99

    1 Review

    94 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
    • 82.5¢ per round
    • Made by Hornady

  9. Old Army 5.56x45 Ammo - 540 Rounds of 55 Grain FMJ M193 Ammunition

    Image of Old Army 5.56x45 Ammo - 540 Rounds of 55 Grain FMJ M193 Ammunition

    $264.99

    $247.99

    6 Reviews

    64 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
    • 540 Rounds
    • 45.9¢ per round
    • Made by Old Army Ammunition

  10. 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

    81 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

  11. Winchester USA 5.56x45 Ammo - 500 Rounds of 55 Grain FMJ Ammunition

    Image of Winchester USA 5.56x45 Ammo - 500 Rounds of 55 Grain FMJ Ammunition
    $264.99

    2 Reviews

    5 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 3180 FPS
    Muzzle Energy 1235 ft lbs

  12. Winchester USA 5.56x45 Ammo - 600 Rounds of 55 Grain FMJ Ammunition

    Image of Winchester USA 5.56x45 Ammo - 600 Rounds of 55 Grain FMJ Ammunition
    $294.99

    2 Reviews

    79 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 3180 FPS
    Muzzle Energy 1235 ft lbs
    • 600 Rounds
    • 49.2¢ per round
    • Made by Winchester

  13. Winchester USA 5.56x45 Ammo - 800 Rounds of 55 Grain FMJ Ammunition

    Image of Winchester USA 5.56x45 Ammo - 800 Rounds of 55 Grain FMJ Ammunition
    $423.99
    Add Review

    95 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 3180 FPS
    Muzzle Energy 1235 ft lbs

  14. Igman 5.56x45 Ammo - 1000 Rounds of 55 Grain FMJ M193 Ammunition

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

    $499.99

    $454.99

    Add Review

    70 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 3180 FPS
    Muzzle Energy 1235 ft lbs
    • 1000 Rounds
    • 45.5¢ per round
    • Made by Igman Ammunition

  15. Winchester USA 5.56x45 Ammo - 1000 Rounds of 55 Grain FMJ M193 Ammunition

    Image of Winchester USA 5.56x45 Ammo - 1000 Rounds of 55 Grain FMJ M193 Ammunition

    $499.99

    $484.99

    12 Reviews

    73 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 3180 FPS
    Muzzle Energy 1235 ft lbs
    • 1000 Rounds
    • 48.5¢ per round
    • Made by Winchester

  16. Winchester USA 5.56x45 Ammo - 1000 Rounds of 55 Grain FMJ Ammunition

    Image of Winchester USA 5.56x45 Ammo - 1000 Rounds of 55 Grain FMJ Ammunition
    $514.99
    Add Review

    69 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 3180 FPS
    Muzzle Energy 1235 ft lbs
    • 1000 Rounds
    • 51.5¢ per round
    • Made by Winchester

  17. Winchester USA 5.56x45 Ammo - 1000 Rounds of 55 Grain FMJ Ammunition

    Image of Winchester USA 5.56x45 Ammo - 1000 Rounds of 55 Grain FMJ Ammunition
    $519.99
    Add Review

    66 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 3180 FPS
    Muzzle Energy 1235 ft lbs

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.
  • PMC 5.56 ammo: Budget-friendly performance with trusted FMJ and X-TAC loads.

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 USA 5.56x45 Ammo - 20 Rounds of 55 Grain FMJ M193 Ammunition
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  • Jack said:

    I have always put M193 as offensive/defensive ammo, which is why I purchased it in the first place. I tested 80 rounds at 25, 50, 100, and 300 yards with a Sig M400, it was dead on accurate.

  • Mike O said:

    Shot this on my high end Geissele rifle and very, very happy with it ... target practice

Click To Purchase This 5.56x45 PMC Ammunition
PMC 5.56x45 Ammo - 20 Rounds of 55 Grain FMJ Ammunition
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  • jerry said:

    great ammo

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 USA 5.56x45 Ammo - 150 Rounds of 55 Grain FMJ Ammunition
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  • Joe said:

    Really good on the range. haven't had a problem yet

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 Old Army Ammunition Ammunition
Old Army 5.56x45 Ammo - 540 Rounds of 55 Grain FMJ M193 Ammunition
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  • David said:

    Performs well

  • Joe said:

    As far as the look and the function of the ammo I’m really pleased with it. The price met or was cheaper than competitors. They were packaged well and clean. They also fired great out of my AR. The thing that stood out the most was the fact that I made my purchase on July 3rd around noon and I received the ammo on July 4th before noon. I was so surprised! I will definitely be ordering here in the future.

  • Jim said:

    Worked great

  • Echelon 9 mm said:

    Very pleased with this ammo that I bought It looks to be well put together every round shot as it should I didn't have any jamming issues everything fed the way it should Good ammo I'll be buying it again.

  • DAVID said:

    Excellent service from when I placed my order to when I received it. I'll be ordering here from now on.

  • Roge said:

    Amazing price For Some ammo!!! Without a doubt in my mind!!

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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 Winchester Ammunition
Winchester USA 5.56x45 Ammo - 500 Rounds of 55 Grain FMJ Ammunition
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  • Ben said:

    I got good ammo at a good price and yes this is a real review I highly recommend it

  • John said:

    Outstanding job, I will use this company and tell my friends.

Click To Purchase This 5.56x45 Winchester Ammunition
Winchester USA 5.56x45 Ammo - 600 Rounds of 55 Grain FMJ Ammunition
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  • Shad said:

    Great Ammo; Pricey

  • J bone said:

    Same ammo as all the rest, most I've ever paid .

Click To Purchase This 5.56x45 Winchester Ammunition
Winchester USA 5.56x45 Ammo - 1000 Rounds of 55 Grain FMJ M193 Ammunition
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  • Steve said:

    Perfect results

  • Kevin said:

    Came fast and cheap. Buy bulk and plant freedom seeds.

  • Brink said:

    All good.

  • Brian said:

    There great for price

  • Brian said:

    Worked as described.

  • Christopher M said:

    Great price, solid performance, and Ammo.com has great customer service.

  • Justis said:

    I've used Winchester rounds in other calibers and never been disappointed by them, and I can say the same for these 5.56 rounds. Excellent training rounds, good pricing, and I've had no issues with the first 450 rounds I've used so far.

  • D. said:

    Was very happy with proformance of Winchester 556.no jams with 2 ARs.will be making another purchase very soon.Thanx much AMMO.you have great sales.

  • Jacob said:

    The rounds were dirty, with some having excess powder or some kind of processing oil/grease on them. A few boxes had 18/19 rounds in them. Worked well in my rifle after 500 rounds so far and were a good price.

  • B.S said:

    Shot 250 rounds , no isues.

  • Jona snow said:

    Great rounds , not one miss fire

  • kevinjc73 said:

    I have a Ruger AR556 in which Ive shot 200 rounds of Winchester 193 556 with no problems accurate at 50, 100 and 200 yards

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