Popular Ammo>AR 15 Ammo

Buy AR 15 Ammo – AR 15 Ammo for Sale

When it comes to AR 15 ammo sales, GunBroker.com, the world's largest online auction site dedicated to firearms, hunting, shooting and accessories, is the place to be. We aim to provide you with all the necessary information you need to make an informed AR 15 ammo purchase. Explore the history, technical specifications, ballistics and background of AR 15 ammo, then browse the listings of our trusted sellers to make your purchase.

Hold your horses; we’ve got plenty more to offer. Check out our registered sellers' huge inventory of AR 15 ammo from a wide variety of manufacturers, including Magpul and Hornady.

Choosing the right AR 15 ammo

If you’re shopping here, you’re probably familiar with the chamber your AR 15 has and what ammo it needs, but surprisingly, many shooters believe all AR 15 ammo can be loaded into their rifle. This can lead to blown primers, case-ejection failure and cracked receivers. The best AR 15 ammo depends on what type of chamber your rifle has, so we’re going to cover the most common.

The .223 Remington is the most common AR 15 chamber. They are chrome-lined, smaller and tighter according to SAAMI (Sporting Arms and Ammunition Manufacturers Institute) specs. These are not to be confused with .223 Match chambers, which rifles slower and reduces the risk of spilling unspent powder.

The 5.56 Mil-Spec chamber is chrome lined and larger because the AR 15 ammo is loaded hotter and accommodates higher chamber pressure. It has a longer throat than the .223 chamber and can safely handle both 5.56 NATO ammo and .223 ammo.

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Thanks for shopping with GunBroker.com, the world's largest online auction site dedicated to firearms, hunting, shooting and accessories. Our auctions are always added to and updated because of our millions of trusted sellers all over the U.S, so check back regularly if you can’t find what you’re looking for. In the meantime, explore our selection of Heckler and Koch guns just a click away.

AR 15 For Sale


Displaying the first 10000 items that match your criteria. Please refine your search.
Item   Title      Click Headers to Sort Quantity Bids Price Time Left
659862352
 
 
 
 
10 $649.99 89d 14h +
659774313
 
 
 
 
1000 $299.99 89d 9h +
659774266
 
 
 
 
1000 $289.99 89d 9h +
659774244
 
 
 
 
1000 $279.99 89d 9h +
659774242
 
 
 
 
1000 $299.99 89d 9h +
659627352
 
 
 
10 $560.00 88d 18h +
659527544
 
 
 
 
100 $215.00 88d 15h +
659503204
 
 
 
10 $2,399.95 88d 13h +
659399156
 
 
 
 
1000 $4.95 88d 9h +
659149896
 
 
 
 
1000 $143.99 87d 11h +
659089970
 
 
 
 
30 $269.99 87d 8h +
659088034
 
 
 
 
290 $58.00 87d 8h +
659065538
 
 
 
 
30 $239.99 87d 6h +
659064351
 
 
 
 
30 $339.99 87d 6h +
659063987
 
 
 
 
30 $349.99 87d 6h +
659063769
 
 
 
 
30 $239.99 87d 6h +
659063685
 
 
 
 
30 $269.99 87d 6h +
659062759
 
 
 
 
30 $349.99 87d 6h +
659062724
 
 
 
 
30 $249.99 87d 6h +
659062634
 
 
 
 
30 $339.99 87d 6h +
659062602
 
 
 
 
30 $299.99 87d 6h +
659062560
 
 
 
 
30 $369.99 87d 6h +
659062520
 
 
 
 
20 $339.99 87d 6h +
659062479
 
 
 
 
30 $199.99 87d 6h +
659285669
 
 
 
 
20 $259.99 87d 6h +
659062386
 
 
 
 
20 $349.99 87d 6h +
659062342
 
 
 
 
30 $259.99 87d 6h +
659062225
 
 
 
 
30 $209.99 87d 6h +
659062093
 
 
 
 
30 $299.99 87d 6h +
659333761
 
 
 
 
20 $239.99 87d 6h +
659785488
 
 
 
 
40 $239.99 87d 6h +
659061654
 
 
 
 
50 $279.99 87d 6h +
659061368
 
 
 
 
20 $279.99 87d 6h +
659518653
 
 
 
10 $224.99 87d 6h +
658504878
 
 
 
 
10 $479.00 85d 13h +
658503931
 
 
 
 
10 $479.00 85d 13h +
658469683
 
 
 
500 $140.00 85d 11h +
658432143
 
 
 
 
10 $589.00 85d 10h +
658425499
 
 
 
 
1000 $71.99 85d 9h +
658309765
 
 
 
 
100 $199.99 84d 20h +
658309753
 
 
 
 
100 $65.00 84d 20h +
659915842
 
 
 
150 $40.00 83d 17h +
657726336
 
 
 
 
60 $139.99 82d 20h +
657726185
 
 
 
 
40 $179.99 82d 20h +
657622660
 
 
 
40 $2,150.00 82d 15h +
657442783
 
 
 
70 $249.00 81d 21h +
657441486
 
 
 
 
450 $89.95 81d 21h +
657441261
 
 
 
 
50 $59.95 81d 21h +
657440876
 
 
 
 
50 $59.95 81d 21h +
657395861
 
 
 
10 $979.99 81d 18h +
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