Evolution Gun Works CNC 7-Port 5-Chamber Hybrid Compensator Aluminum. Thread-Pitch:.575" x 40EGW designed this comp for use in the Steel Challenge and Bianchi Cup. It is designed for reduced loads. For EGW's CNC comps we start with an aluminum comp blank. Using a carbide ball endmill we machine the various port configurations into the comp. CNC comp back ports are at a 10 degree angle to control muzzle flip. Side ports make the gun feel plusher and track straighter for improved control while firing. Machined from 7075 T6 aluminum. Available in Bushing or Hybrid only. When installed comps should be align-reamed with the barrel bore. EGW recommends installation by a competent gunsmith Specifications for Evolution Gun Works CNC 7-Port 5-Chamber Compensator Aluminum: Manufacturer: Evolution Gun Works Color: Silver Fabric/Material: Aluminum Package Contents: Evolution Gun Works CNC 7-Port 5-Chamber Compensator Aluminum Evolution Gun Works 11881: Aluminum CNC 7-Port 5-Chamber Hybrid Compensator Aluminum