I put one on a Mossberg 22 mag rifle. It had a terrible trigger and no way of getting it lighter. I bought one and put it on. It does not leave much room for your trigger finger, forget wearing gloves. It may give you more room with a different design. It does clamp onto the trigger guard with set screws and will mar it. The one on the Mossberg is thicker than the ones on the Handis. It did bring down the trigger pull, quit a bit. It was also smoother, but put considerably more creep into it. I think I shoot a little better with it than with out, but would not put it on any hunting rifle where a quick shot is needed or on a gun that you can get the trigger down to decent pull with out it. Did I mention that it will flop forward and block your finger from entering the trigger area? I guess that is why I would not have it on a hunting gun of any kind. Just my 2 cents