Winchester USA 5.56 NATO ammunition is derived from (but more powerful than) the .223 Remington cartridge. This 5.56 rifle ammunition is one of the most popular types used in AR-15 rifles and the full metal jacket round construction makes it affordable for high volume range training. This cartridge also features reloadable brass making it an even better deal.
To millions of hunters and shooters worldwide, the name “Winchester” means quality and performance. No matter the sport, game or protection, you can always depend on Winchester Ammunition to perform as promised.
Note: .223 Remington cartridges can be fired from 5.56 NATO barrels, but 5.56 NATO rounds cannot be fired from .223 Remington barrels.