Sniper Grunt Tactical Flashlight Singe Ring mounting on M-lok, Ultra Bright 260 Lums Cree R2 Bulb Tactical Flashlight, with Picatinny Mount, Quick and Easy Install in seconds Super bright 260 Lumen output with white LED Cree Q5 LED bulb with 5 light modes: High, Medium, Low, Strobe, SOS Batteries + Remote pressure switch + Picatinny mount included One piece flashlight tube, 0 ring seal on battery cap thread