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Shop .223 and 5.56 ammo in one convenient view while keeping each cartridge designation distinct. Compare brand, bullet weight, projectile type, box quantity, price and cost per round, then confirm compatibility using your firearm’s chamber marking, owner’s manual and manufacturer guidance. Do not assume the two designations are universally interchangeable.
Compare confidently: Price per round is shown on products • Current availability updates from our catalog • Source-based shipping is disclosed in the cart and at checkout.
These cartridges are closely related, but the names should not be treated as universally interchangeable. Chamber geometry and ammunition standards can differ. Check the caliber or chamber marking on your firearm, read its owner’s manual and follow the firearm manufacturer’s guidance before selecting ammunition. In particular, do not use 5.56 NATO ammunition in a firearm marked only for .223 Remington unless its manufacturer specifically approves that use.
Choose the load for the job rather than price alone. Full-metal-jacket options are commonly selected for practice, while hunting and other specialized loads use different bullet designs. Product specifications and reliable function in your firearm should guide the final selection.
Shipping
Standard shipping is $13.95 when merchandise from one fulfillment location totals less than $300. Merchandise totaling $300 or more from that location qualifies for free standard shipping. Separate locations are evaluated independently, and all applicable charges appear during checkout.
.223 and 5.56 ammunition FAQs
Are .223 Remington and 5.56 NATO the same?
No. They are closely related, but chamber geometry and ammunition standards can differ. Do not assume universal interchangeability.
Can I fire .223 Remington in a 5.56 NATO firearm?
Follow the firearm’s markings, manual and manufacturer guidance. If chamber markings are absent or unclear, have the firearm inspected by a qualified professional before use.
How is shipping calculated?
Standard shipping is $13.95 per fulfillment location below $300. Merchandise totaling $300 or more from that location qualifies for free standard shipping.
