The powerful and versatile SureFire X300 Ultra WeaponLight for handguns and long guns features a high-performance LED that generates 500 lumens of stunning white light. Focused by a Total Internal Reflection (TIR) lens to produce a tight beam with extended reach and significant surround light for peripheral vision. The virtually indestructible and highly efficient LED generates tactical-level light-more than enough to overwhelm an aggressor's dark-adapted vision-for 1.5 hours per set of batteries. Easy-to-use ambidextrous momentary/constant activation switch. Attaches and detaches quickly from Picatinny rails.