I have a gen 3 G17 and I heard the gen 4 G17 recoil spring reduces recoil, if so, will the gen 4 spring fit in the gen 3???
This is how I know it as well. The gen4 is a dual spring system and definitely has a noticeably bigger hole/seat in the front pf the slide. Eyeballing it, it won't seat in a gen3Far as I know, the gen 3 spring can be used on a gen 4 gun but not vice versa due to the size of the hole for the spring