Rosco Bloodline Barrel 16" 5.56 Heavy Barrel 1/7

The Rosco Bloodline Barrel 16" 5.56 Heavy Barrel 1/7 is a purpose-built rifle barrel engineered for intermediate to long-range precision shooting and duty use. This heavy profile barrel delivers the thermal mass and rigidity required to maintain consistent accuracy across high round counts, making it a standard choice for both competition shooters and operators running sustained-fire drills on the range or in training scenarios.

The 16-inch length provides a practical balance between velocity and maneuverability—delivering sufficient muzzle energy from the 5.56 NATO cartridge while keeping overall rifle length compact for vehicle deployment, close-quarters work, or patrol environments. The 1/7 twist rate is optimized to stabilize the full spectrum of 5.56 projectiles, from lightweight 55-grain loads to heavier match-grade and tactical rounds in the 77-grain range. The heavy barrel profile resists barrel whip under rapid fire and maintains point-of-impact stability during extended shooting sessions—a critical advantage in law enforcement, military, or precision rifle applications where thermal expansion would otherwise degrade group consistency.

This barrel is suited for shooters building a duty rifle, precision carbine, or high-round-count training platform. Whether configured for 3-gun competition, police tactical training, or practical rifle work, the 16" Bloodline delivers reliability and accuracy without excessive weight penalty. Buyers seeking a verified upgrade path for existing platforms or a core component for a custom build will find this barrel meets the specifications demanded by serious users who prioritize consistent performance over a full range of conditions.