SIG SAUER Clutch-Lok QD Muzzle Brake 5.56mm 5/8x24 25 Degree Taper Black SL55612X2825DEGM. 56MM SLH/SLX suppressors and 7.62MM SLH/SLX suppressors. It offers a quick and simple attachment of your suppressor and less felt recoil when the suppressor is...