This full-size green laser is extremely bright to long distances for target pinpointing. Featuring all aluminum construction, it has a 532nm green laser beam <5mW, set in a specially-designed Weaver-style mount with mounting tool. It has an on/off cap switch for momentary or constant beam and includes a coil pressure switch and one CR123A lithium battery. Feature: Weaver style clamp on mount will fit most weaver and Picatinny type rails, includes mounting tool Fully adjustable for windage and elevation, includes adjustment tool Momentary end cap switch and it also comes with remote pressure switch International orders will not include batteries