Puts an on/off switch on the front strap, just below the triggerguard, for easy operation by the middle finger Replaces the original TLR battery door/switch; snap-on/off with no tools required One-piece, polymer body hugs the triggerguard contours for a smooth-looking installation Retains the TLR’s standard toggle-type paddle switch for normal operation if desired Fits Glock 17/22 and 19/23 sized frames; works with TLR-1, 1S, 2 and 2S; does not fit TLR-3 TLR-1 Weapon Lights available separately. Mfg: Streamlight