check this site out the model 617 board has a lot of info there for you I took there suggestions before i went to the range and got a set screw just incase and sure enough Just like they all said it wont fire and it didnt so I just took the gripe off right there and changed it out the range officer real nosey and watching my every move an
d said damn you really Know your Guns and I had to laugh and thought how I listened to the guys here on this site TheHighRoad.org great site lots of info just for the m-617
james