Simple, well thought out design - InForce Dedicated Glock APL, 200 Lumen White Light

On my Glock 19 and coupled with a Crimson Trace laser grip (they coexist nicely) there can be no finer at night home defense weapon. Prior to firing your index finger is outside the trigger guard and alongside the frame. The tip of your index finger (right or left) will rest upon the on-off toggle making the light ready for immediate use. Flip it on momentarily or keep it on, your choice as tactics dictate. Fits like a glove--definitely designed for the Glock rail. Nice color match to the weapon.