The Chest Rig by CrossBreed Holsters features multiple points of retention adjustment, including a retention device installed under the trigger guard (not available on revolver selections), and the ability to tighten the screws that mount the pocket to the leather. This Reckoning style setup gives you the ability to customize your retention to your exact specifications. | Crossbreed Holsters Chest Rig Gun Holster Fits Glock 20, 20SF, 21, 21SF Handguns in Black