"Green laser with 1 inch scope mount and pressure switch.
Specifications and Features:
All Aluminum construction.
532nm green laser beam <5mw
Specially designed 1 inch mount perfect for mounting to a 1 inch scope tube or 12 gauge shotgun magazine tube.
Momentary on and off cap switch and coil pressure switch included.
Powered by 1 CR123A Lithium type battery (included).
Dimensions(in): 4.08(l) x 1.54(w) x 3.4(h)