JMAC 4 prong 5/8x24 (GFH)
The GFH is a combination of the German G36 flash hider and DeadAir Silencers KeyMount.
SHIMS ONLY NEEDED FOR TIMING
KeyMo & KeyMicro Suppressor compatible
17-4ph Stainless Steel
*always know what muzzle devices configurations are compatible with your silencer