WADSN Airsoft Perst 4 Aiming Laser Strobe Red Green Dot IR Sight Tactical SF M600DF Flashlight 1400lumen Hunting P4 Scoutlight. Name:Perst 4+M600DF(1400lumens) Flashlight. Function:Laser constant on and Strobe/IR Strobe. Perst 4 Fit:20MM Picatinny rail. The KV-5PU wire:can adjust the laser brightness. Feature:Support Zero Target adjust. Battery: 16340 rechargeable battery.