Anyone know where to get generic gun springs. I would like to figure out a slightly quicker rebounding sear spring for my 617. I noticed while rapid firing that the sear to trigger action sometimes can't keep up on my M617. It doesn't cause the gun to misfire, but it will require a quite reset to get the action back. More just for performance tuning , it cycles fine otherwise. I have a 9# trigger spring and the stock hammer spring.