The Best Pistol Laser Sights
The Laserlyte trainer/sight attaches to your picatinny rail, and comes with two body sizes to adapt to different size handguns. Like the Streamlight TLR-6, setup takes a little bit of time as installation is achieved by taking apart the sight and then reassembling the two haves around the picatinny rail. The unique thing about this offering from Laserlyte is that it’s both a laser sight, and a laser training device. You can press a button to turn the laser on and off for aiming, but when you pull the trigger and drop the hammer/striker on a snap cap, the laser is sound-activated and brief...
Source: outdoorhub.com