The SiCo GDCH utilizes a unique design feature which incorporates the use of a commonly found "O" ring seal to prevent gases from escaping from the most prominent point of egress typical of both Mil-Spec and Aftermarket Charging Handles currently available on the market. The GDCH significantly impedes the the emission of uncomfortable gases when utilized on both 5.56 NATO and .300BLK chambered AR-15 platforms. Compatible with mil-spec forward assist and dust cover (not included) Designed for use with standard Mil-Spec lower receiver M4 feed ramps Mfg: Silencerco
