The Combat Tactical Green Laser is the most versatile laser in its class. The green laser provides quick target acquisition and mounts easily to a wide variety of weapons with the universal weaver/picatinny-style ring mount. Included with the laser is a pressure pad switch for instinctive activation when you make your weapon ready to fire. The hard anodized aluminum body is abrasion resistant and provides extreme durability in any situation. The push button tail switch allows you to use the laser as a handheld unit when desired. Powered by 1 CR2 3V lithium battery and covered by a 1-year limited warranty. Notes:Universal Weaver/Picatinny-style ring mount includedAmbidextrous push button tail switch for handheld use