Recoil Spring Guide Assembly for Old Style PM9 (Type 2) Muzzle end of slide will be squared off rather than beveled, plunger head size is 1/2" Also for old style PM40- If you have a recoil spring where the recoil guide part of the recoil spring assembly measures about 2.25" then you have an old style PM40. If there is still some confusion over which style recoil spring you need please call our customer service line.
Limited Supply
