Spiff
Semi-Pro
This recoil reducer came in a shotgun I bought that had about 25 rounds through it. It replaces the stock retaining nut on the end of the recoil spring tube. Apparently it won't go on an M2, but if the threads are the same it could probably be coaxed into fitting. $50 to your mailbox.
http://store.benelliusa.com/recoil-reducer-sbem1
http://www.midwestgu...djustment/80207
http://store.benelliusa.com/recoil-reducer-sbem1
http://www.midwestgu...djustment/80207