The Pro Guide Semi-Auto Holster attaches to belts, MOLLE, and the bottom of the Pro Guide Binocular Harness 2. This adjustable holster fits a wide variety of semi-auto handguns and small revolvers, so whatever firearm you conceal, youll be able to take it with you on your next hunt or hike. Just move the retention strap along the loop-lined interior to change its size.