|I picked up a couple of these being so cheap. I'm more than pleased. Comes with a couple sets of 3/8in dovetail rails. Remote pressure switch on coil cord is detachable; if removed, on/off switch on the body of laser works just fine.
I played with it on a few pistols, though - totally wrong, but still fun.
I clamped it on a Phoenix 22HP pistol and had to play around to get the aiming good - including a rod in the barrel to start with.
(This would not practical for carrying or holstering this gun, but everything worked and it held its target for the 30 rounds I popped off... I used the remote switch under my thumb - held on by velcro (provided)).
Visible during daytime, great at dusk.
For a self-defense piece in a drawer, this would be great. The red dot that makes 'em pee their pants.|