The UTG® compact green laser for glock handguns and pistols with picatinny rail features ambidextrous momentary-constant On/Off toggle switches with low profile Picatinny rail mount. This UTG compact laser sights for handguns with the low profile mounting deck securely attaches to either universal or Picatinny Rails. The Green Laser sight for your gun is made fro durable aircraft aluminum with a matte black finish with Class 3R Bright Green Laser with a 3 Hour Runtime Off a Single 1/3N 3V Battery.