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
685720891
 
 
 
 
10 $279.99 89d 16h +
685676825
 
 
 
10 $739.99 89d 14h +
685617012
 
 
 
 
200 $49.00 89d 12h +
685590980
 
 
 
 
100 $450.00 89d 11h +
685590773
 
 
 
 
100 $375.00 89d 11h +
685590732
 
 
 
 
50 $275.00 89d 11h +
685583295
 
 
 
 
100 $45.00 89d 10h +
685528098
 
 
 
 
850 $39.95 89d 7h +
685491444
 
 
 
 
1000 $109.99 89d 6h +
685443550
 
 
 
10 $1,049.99 89d 3h +
684626030
 
 
 
90 $479.00 87d 5h +
683968632
 
 
 
 
200 $74.99 85d 15h +
683592151
 
 
 
 
100 $185.00 84d 16h +
683591869
 
 
 
 
100 $65.00 84d 16h +
683591297
 
 
 
 
100 $186.99 84d 16h +
683591228
 
 
 
 
100 $18.99 84d 16h +
682994909
 
 
 
 
10 $569.00 83d 10h +
682639562
 
 
 
 
200 $49.98 82d 16h +
682616322
 
 
 
 
200 $109.99 82d 15h +
682616301
 
 
 
 
200 $109.99 82d 15h +
682507856
 
 
 
 
780 $9.95 82d 11h +
682499262
 
 
 
 
10 $699.00 82d 10h +
682497988
 
 
 
 
10 $699.00 82d 10h +
682494903
 
 
 
 
10 $189.00 82d 10h +
682471443
 
 
 
 
50 $159.00 82d 9h +
682470346
 
 
 
 
50 $299.00 82d 9h +
682469051
 
 
 
 
20 $299.00 82d 9h +
685490920
 
 
 
 
30 $219.95 82d 8h +
682409925
 
 
 
 
1000 $89.99 82d 6h +
682951091
 
 
 
 
990 $330.99 82d 6h +
682406388
 
 
 
 
1000 $321.99 82d 6h +
682367207
 
 
 
 
30 $211.50 82d 3h +
682161706
 
 
 
10 $289.00 81d 15h +
681947933
 
 
 
 
450 $44.95 81d 5h +
683387794
 
 
 
 
430 $39.95 81d 5h +
681947459
 
 
 
 
450 $59.95 81d 5h +
681779929
 
 
 
 
650 $39.95 80d 17h +
681521184
 
 
 
 
50 $756.10 80d 5h +
681488238
 
 
 
 
100 $235.00 80d 2h +
681488209
 
 
 
 
100 $235.00 80d 2h +
681121241
 
 
 
 
150 $160.00 79d 6h +
683351547
 
 
 
 
90 $149.90 78d 15h +
680892174
 
 
 
 
100 $300.00 78d 15h +
680892141
 
 
 
 
100 $310.00 78d 15h +
683014207
 
 
 
 
90 $310.00 78d 15h +
680832749
 
 
 
 
50 $1,395.00 78d 13h +
680827921
 
 
 
 
50 $1,395.00 78d 13h +
680822114
 
 
 
 
50 $1,265.00 78d 12h +
680820063
 
 
 
 
50 $1,235.00 78d 12h +
680815148
 
 
 
 
50 $1,166.00 78d 12h +
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