Fiocchi Hyperformance SBR Enhanced Rifle Ammo is precision-engineered for optimal performance in short-barreled rifles, patrol carbines, and arm-brace pistols chambered in .223 Remington. Each 77-grain Sierra MatchKing HPBT projectile is designed to deliver maximum ballistic efficiency, low muzzle flash, and a reduced sound signature when used with suppressors. Optimized for barrels ranging from 11.5 to 7.5 inches, this ammunition provides reliable velocity and energy, making it an excellent choice for tactical applications. With a consistent burn rate and exceptional terminal performance, this 20-round box is a go-to option for short-barrel enthusiasts.