A sound-activated laser training barrel, the LaserLyte LT-GM allows owners of Glock 19 and 23 models to train safely with their handguns without the use of ammunition. Providing instant feedback, the LT-GM produces a 5 milliwatt laser beam when the gun’s trigger is pressed. Shaped to mimic the gun’s barrel assembly, the laser unit is installed by disassembling the firearm and substituting LaserLyte’s barrel when putting everything back together. The laser is activated by the sound of the striker slamming forward, is constructed of 6061 aluminum and weighs only 1.5 ozs. The unit is powered by three 393 batteries, and has a purported battery life of 10,000 shots. The training barrel cannot accept ammunition, and it features a built-in snap cap to protect the firing pin from potential damage. As the Glock trigger will not reset until the slide cycles, the user must manually pull back the slide after each trigger pull in order to reactivate the training laser. Price: $160. Contact laserlyte.com.