Built from 416-R stainless-steel bar stock, the Brownells 6.5 Grendel AR-15 barrel features a medium profile taper and .750-inch gas journal. The barrel incorporates 5R rifling with a 1:8 twist rate to maintain accuracy across different bullet weights, paired with a threaded muzzle at 5/8×24 TPI with an 11-degree target crown. This 20-inch rifle-length gas system configuration balances velocity and handling for versatile use in the field or at the range.
Each barrel is made in the USA and ships with a matched Type II bolt, with all units undergoing magnetic particle inspection for quality assurance. The stainless steel construction and precision machining deliver consistent accuracy with various 6.5 Grendel ammunition loads. Whether you’re upgrading an existing upper or building from the ground up, this barrel delivers the performance and durability expected from Brownells’ in-house offerings.
