Rock River Arms LAR-BT9G CAR A4 is a semi auto 9x19mm rifle with a 16 in chrome moly barrel and a Glock compatible magwell built on an A4 style upper. The A2 flash hider is mounted on 1/2-36 threads and the rifle uses an RRA single stage trigger with a 6 position Tactical CAR stock for familiar handling. With a polymer R-4 handguard and optic-ready setup it's well suited for range time and practical training.Key Features 9x19mm chambering 16 in chrome moly barrel with 1:10 twist 1/2-36 muzzle threads with A2 flash hider Semi Auto 17+1 capacity Billet aluminum lower with Glock 17 compatible flared magwell Includes one Glock compatible magazineRock River Arms builds American made rifles known for solid fit dependable function and practical feature choices. The company is widely associated with AR pattern platforms configured for training sport shooting and duty oriented use. Rock River Arms focuses on consistent manufacturing standards and component selection that help shooters get repeatable performance over high round counts.