About .223 / 5.56 NATO Ammunition
This listing combines live deals for both .223 Remington and 5.56 NATO — the two most popular AR-15 cartridges. The rounds share the same case dimensions, but 5.56 is loaded hotter; rifles marked .223 Wylde or 5.56 can shoot both, while .223-only chambers should stick to .223. Across both, bulk FMJ practice ammo typically runs $0.35 to $0.55 per round. Kilo Tango searches live .223 and 5.56 prices from Lucky Gunner, Ammunition Depot, OpticsPlanet, Guns.com, and Sportsman's Guide so you can buy whichever is cheapest per round.
Live .223 Rem & 5.56 NATO Results
Real-time inventory from our connected retailers. Click VIEW DEAL to purchase direct.
Related Guides & Resources
Dig deeper before you buy — hand-picked guides, price data and state rules for this caliber.
Best .223 / 5.56 Ammo →
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Ammo Types Decoded: FMJ, JHP, +P →
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Bulk Ammo Buying Guide →
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Cheapest Place to Buy Ammo Online →
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Mastering Mils: Long-Range Basics →
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Ammo Laws by State →
Shipping rules, permits and restrictions for all 50 states + DC.