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
709659570
 
 
 
100 $349.99 89d 18h +
709514685
 
 
 
 
1000 $399.99 89d 10h +
709464023
 
 
 
 
110 $89.99 89d 6h +
709463804
 
 
 
 
160 $16.00 89d 6h +
709455277
 
 
 
 
100 $34.00 89d 5h +
709385594
 
 
 
 
60 $799.99 88d 20h +
709421661
 
 
 
20 $299.95 88d 16h +
709179886
 
 
 
10 $1,049.99 88d 7h +
709173584
 
 
 
10 $514.00 88d 7h +
708670171
 
 
 
 
300 $59.95 86d 16h +
708296530
 
 
 
 
100 $215.00 85d 16h +
708222274
 
 
 
 
50 $289.99 85d 11h +
709246012
 
 
 
240 $59.99 85d 9h +
708047890
 
 
 
 
30 $229.99 84d 18h +
708868864
 
 
 
20 $339.99 84d 18h +
707987505
 
 
 
 
10 $549.99 84d 15h +
709358862
 
 
 
70 $420.00 84d 11h +
707926078
 
 
 
1000 $49.95 84d 11h +
708280330
 
 
 
 
970 $15.99 83d 19h +
707713360
 
 
 
 
100 $44.95 83d 19h +
707617882
 
 
 
 
50 $169.95 83d 14h +
707614780
 
 
 
 
1000 $369.99 83d 14h +
707611729
 
 
 
 
1000 $369.99 83d 14h +
707611715
 
 
 
 
1000 $369.99 83d 14h +
707611646
 
 
 
 
1000 $369.99 83d 14h +
707593624
 
 
 
 
50 $159.95 83d 13h +
707524967
 
 
 
10 $2,750.00 83d 10h +
707177611
 
 
 
 
140 $32.50 82d 12h +
707174168
 
 
 
 
120 $22.50 82d 12h +
707118018
 
 
 
 
20 $149.99 82d 10h +
706922922
 
 
 
 
100 $235.00 81d 19h +
706885840
 
 
 
 
50 $269.99 81d 17h +
706731171
 
 
 
 
10 $1,499.95 81d 11h +
706729868
 
 
 
 
10 $1,899.99 81d 11h +
706729353
 
 
 
 
10 $1,599.99 81d 11h +
706411945
 
 
 
 
100 $175.00 80d 17h +
706360050
 
 
 
 
200 $38.00 80d 15h +
706360048
 
 
 
 
210 $34.99 80d 15h +
706347021
 
 
 
10 $739.99 80d 14h +
706216533
 
 
 
100 $75.00 80d 7h +
706142784
 
 
 
 
200 $109.20 80d 1h +
707489741
 
 
 
 
960 $14.99 79d 19h +
705949154
 
 
 
 
10 $690.00 79d 15h +
709669093
 
 
 
 
80 $64.00 79d 6h +
705512953
 
 
 
210 $150.00 78d 16h +
705368351
 
 
 
 
1000 $399.99 78d 9h +
705172009
 
 
 
 
100 $165.00 77d 19h +
705171535
 
 
 
 
100 $50.00 77d 19h +
705170937
 
 
 
 
100 $840.00 77d 19h +
705113623
 
 
 
 
100 $850.00 77d 17h +
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