I bought the pistol grip-only Knoxx breachersgrip off Gunbroker and hung it on the back of an unconverted S12. A full-length Knoxx Spec-Ops stock was also tested. This required filing, drilling and tapping the supplied aluminum Mossberg adapter block.
This gun functions perfectly and recoil is noticeably reduced. All video results at my channel page: http://www.youtube.com/user/TheMysticSmoke
Birdshot -
Slugs -
One-handed 3" Magnum -
Knoxx expressly warns against using their Spec-Ops family of stocks on any semi-automatic shotgun. The unstated implications are that the gun