The Streamlight TLR-1s is a high-output, rail-mounted tactical light engineered for rapid attachment to handguns and long guns equipped with Glock-style or Picatinny rails. The C4 LED delivers 300 lumens and 12,000 candela of brightness with a 2.5-hour regulated run time.

Constructed from machined aircraft aluminum with a black anodized finish, this weapon light features a deep-dish parabolic reflector that produces a concentrated central beam with optimized peripheral illumination. Solid-state current regulation maintains consistent output throughout battery life.

An ambidextrous momentary/steady on-off switch provides intuitive operation, while a double-tap of the momentary paddle within 0.4 seconds activates the strobe function. The rail grip clamp system allows secure, tool-free mounting and removal.

IPX7-rated waterproofing protects the light to 1 meter for 30 minutes. Includes keys for Glock-style, Picatinny, Beretta 90two, S&W 99, and S&W TSW rails.