The Tacticon Firefly V1 laser flashlight combo is offered with both a red laser or green laser and was built specifically for tactical rifles such as the AR 15, but can also be attached to any handgun equipped with a picatinny rail. The picatinny rail mount is integrated into the polymer housing of the Firefly V1 and has a hand-tightening knob to adjust tension on the rail. The Firefly V1 Laser Flashlight Combo features a pressure tail switch with double sided tape (included) to mount anywhere desired on your rifle. Battery life is approximately 2 hours 45 minutes run time with ‘laser on’ and 1 hour 15 minutes with ‘flashlight on’. CR123A rechargeable batteries (plus an extra set of batteries) are included with your purchase.