223 Wylde is not a separate cartridge but a rifle chamber specification designed to safely fire both .223 Remington and 5.56 NATO while favoring accuracy. Firearms listed under it are chambered to this hybrid spec.

223 Wylde refers to a chamber design, not a distinct cartridge, created to accommodate both .223 Remington and 5.56 NATO ammunition while supporting good accuracy. Rifles with a 223 Wylde chamber can generally fire both, which is its main appeal to target and general-purpose AR-15 shooters. Ballistically, the ammunition used is .223/5.56, so its character matches those rounds: light recoil, wide availability, and use for target shooting, varmint control, and defense in carbines. Because it is a chamber rather than a cartridge, this overview applies to the .223/5.56 ammunition it fires.

General information about this caliber — not a recommendation for this specific firearm.