Features:  Mounting latch(11mm/21mm switchable) fixes laser sight to weapon securely  Suitable for fast aiming and shooting at stationary and moving objects    Specifications:  Power: <5mW  Metal housing  Wavelength: red 635nm~655nm  Laser Range: 50M~100M  Tube size: 17mm  Size: approx 57mm*11mm*29mm  Net Weight:57g  Weight: 67g  Fits for most 11mm/21mm tactical firearms with or without rail slots  Notice:  Class IIIA product， avoid direct eye exposure to laser beam  Never point a laser beam at a person    Package included  1x Tactical Red Laser Beam Dot Sight Scope  2x Allen wrenches  3x Button cells