Krieger DCM 1-7 Twist Post-Ban A4 Service Rifle Upper Built around a Krieger DCM 1-7 twist cut-rifled barrel, this A4 Service Rifle upper is designed for competitors who demand consistent accuracy from a competition-focused setup. The 416R stainless steel barrel features a .223 Wylde chamber, 1-7 twist rate, rifle-length gas system, and an 11-degree target crown. The A4 flattop receiver is paired with an A2-style handguard and a railed .750" gas block in place of a front sight tower. The upper includes a complete bolt carrier group and standard charging handle, providing a complete upper assembly ready to pair with your lower receiver. Specifications: Krieger DCM single-point cut-rifled and hand-lapped barrel 416R stainless steel .223 Wylde chamber 1-7 twist rate 20" Barrel 4-groove barrel Rifle-length gas system 11-degree target crown .750" railed gas block A4 flattop receiver A2-style handguard M4 feed ramps Complete bolt carrier group Standard charging handle Overall Weight is 7.6 Pounds