Compensator gives improved recoil and muzzle movement. Compatible with any A2 suppressor mount with 14mm CW or CCW threading. Metal build for better durability. Replaces well with broken or damaged flash hiders. Designed to compete in quick shooting situations against competitors. In the Box 1X Flash Hider Specifications: Construction Polymer Threading 14mm CW and 14mm CCW Dimension 57 x 22 mm Weight 0.11 lbs Compatible Airsoft rifles with 14mm CW or CCW barrel thread. California Proposition 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov