Once you get it working its great ,,,,but you may have to "rig " it - Crimson Trace Smith and Wesson J-Frame Revolver Round Butt Lasergrip Green Laser Sight

I have the Crimson Trace Laser grip on 4 revolvers -- 2 of them worked great right out of the box but 2 of them I had to cut a piece of cardboard and insert it against the battery cover plate to keep enough pressure on the plate for it to make good contact with the batteries -- without the cardboard it randomly works or doesnt work -- you can pick it up and it works great and you can lay it on the table and pick it back up and it doesnt work or vice versa. Very frustrating -- if you will cut 1-2 thin pieces of cardboard about the size of a quarter and wedge that in the middle of the grip when you close it up it will work fine -- kind of a shame to pay what you pay for this and you have to rig it to work but based on my experience its a 50-50 chance you will have to do this -- once you get it working it is awesome -- just be aware that you may get one that needs modification ---