The SureFire X400U is engineered to fit virtually any rail-equipped pistol. Its recoil-proof LED and TIR lens focus 1 000 lumens of light into a smooth far-reaching beam with a large central spot that is extremely effective combination for close- to medium-range engagements. Available in high-vis green (515 nanometers) its 5-milliwatt laser is highly visible to the human eye to help the user get on target quickly and accurately. With an aluminum body thats light strong and weatherproof it can handle hard knocks.