I'm trying to find a recoil spring ( I hope that's the right term) for my Stoeger M3k I use for 3 gun competition. The shotgun runs fine but I want to get a backup just in case. I can't seem to find anything online however. The closest thing I found was this http://www.midwestgunworks.com/mm5/merchant.mvc? . Does the M2000 share thae same spring as the M3000/M3K?