223 ammo is for sale every day at GunBroker.com. You can buy this popular rifle ammunition made by manufacturers like Remington and PMC through one of the many sellers listing their products here at GunBroker.com, the world's largest gun auction site.
223 ammo is virtually identical in external dimensions to the 5.56x45mm NATO rifle cartridge. 223 ammo, however, is both lighter and shorter than the 5.56x45mm. Compatible with the AR-15, 223 ammo is one of the most popular types of rifle cartridge in the U.S.
GunBroker.com sellers update their auction listings frequently, so if you're looking to buy 223 ammo or parts, check back often.