Streamlight TLR-4 Rail Mounted Tactical Light with USP Compact Clamp (69241). Lightweight rail-mounted light with red laser, constructed of an impact-resistant polymer, designed to fit compact and sub-compact handguns. It also fits most full-sized handguns with rails on the market. Now shining brighter at 170 lumens! White 170 lumen LED and red laser for long-range targeting. 3 modes: White LED only, Red laser only, or both LED and Red laser. Runs 1.5 hours to the 10% output level (LED only or LED and laser); 15 hours (laser only). Compact – weighs 2.81 oz (79.7 g) with included battery; 2.73 in (6.93 cm) long. Key kit included for mounting to a variety of weapons (H&K USP models do not include key kit). Rail clamp designed to rapidly attach/detach from side of weapon. One handed snap-on and tighten interface keeps hands away from muzzle when attaching/detaching. Windage and elevation adjustment screw mounted in bushing for dependable zero retention of laser. Ambidextrous momentary/steady On-Off switch. Uses one 3V CR2 lithium battery (included). Impact-resistant polymer construction with durable anodized aluminum facecap. High temperature glass lens. Serialized for positive identification. Models also available for H&K USP Compact frame and H&K USP Full Size frame. This part can be used with. This is not a restricted firearm part or component. Milspec Retail (established 2014), is an industry-leading retailer focusing on the latest, most innovative and highest performing tactical tools and shooting/hunting parts available, hand selected to meet and exceed all expectations. _gsrx_vers_1326 GS 8.4.1 (1326).