This is a LaserMax Uni-Max Micro Red Laser. This micro laser fits most firearms with an accessory rail and is the perfect match for compact and sub-compact pistols. Constructed from Zytel for superior strength and durability. This laser features push button activation from either side and adjustable windage and elevation for precise alignment. Weight is only 0.43 oz. and comes with a factory 3 year warranty. Batteries included.