SMALL BASE + STD FRONT CAP + STD BARREL END CAP + STD THREAD ADAPTOR. ADDED LENGTH: 153mm OVERALL LENGTH: 171mm DIAMETER: 50mm WEIGHT: 365gTHREAD: M12 X 1, M13 X 1, M14 X 1, M16 X 1, M18 X 1, & IMPERIALSUGESTED CALIBER: .204 > .220 (-1) BBG - NF#2 - O1SUGESTED CALIBER.204 > .220 (-1)ADDED LENGTH (mm):153OVERALL LENGTH (mm):171DIAMETER (mm):50WEIGHT (g):365COMPONENTS Select