Tames back to battery thump - Blitzkrieg Components AR 9 mm Recoil Buffer

My FM-9 had an annoyingly harsh back to battery recoil that pulled the optics off target consistently. This buffer greatly improves the feel of the bolt coming forward, optic jump and generally smoothing out the entire recoil impulse. It is kind of expensive for a part on a firearm meant to reduce cost of range trips, but otherwise the FM-9 would be staying home a bunch more.