Streamlight^{Inc. has introduced the TLR-4, a compact, lightweight, rail-mounted tactical light featuring an integrated red aiming laser. The new light is designed to provide added versatility for a variety of tactical and home defense uses. The TLR-4 brings extraordinary brightness to a wide variety of hand guns through the use of C4 LED technology. The light is easily mounted to most standard rail guns using Streamlight’s one-handed, snap-on-and-tighten interface, which allows the light to be mounted safely within seconds. The TLR-4’s 640-660nm red laser increases the user’s ability to focus on a target, particularly in emergency situations. The light can be deployed in Laser-Only mode to keep the gun on target, in LED-Only mode to provide bright, focused light, or in dual mode which uses both light sources.}