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 hybrid beam with a large central spot and plenty of spill light, an extremely effective combination for close – to medium – range engagements. Available in traditional red (635 nanometers) or 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 a Mil – Spec hard – anodized aluminum body that’s light, strong and weatherproof, it can handle hard knocks and stay in the fight. Mounting an X400U on your pistol or long gun is a clear sign that you take your security seriously.