*Compatible with optical pistols, RMR compatible direct mount*Ultralight (just over 1 ounce). ), CNC machined from aircraft grade aluminum*Unlimited Eye Relief, Auto Shutoff Conserves Battery Life, Waterproof (O-Ring Sealed Design)Whether riding the slide of an optic-ready handgun or outfitting a rifle or shotgun with ultra-lightweight accessories, the new TRUTECTM MICRO is here to help. The MICRO incorporates favorite features of the TRUTEC line in an ultra-lightweight and versatile profile, including digital push-button brightness control and an idle auto-off system to save battery life