Designed to provide quick and easy installation and removal of the M41 Severe-Duty™ Muzzle Brake. Close fitting design provides the best method of installation to avoid damage or marring. Square 3/8" drive socket allows attachment of a torque wrench for precise tightening. Black oxide finish.
AR-15, Issue:11, Page:024
Big Book Catalog, Issue:68, Page:024
SPECS: High strength low alloy (HSLA) steel, black oxide finish. 8.38" long, 3/8" drive socket, 40 ft-lbs max torque.