12 gauge 922r 2000 2011-2012 11707 accessories action ammo auto-loader barrel benelli buffalo buying chambering choke cleaning clip collapsible stock cougar date of manufacture defense drum extension failure for sale franchi handrail kick-eez left m4 for sale m4 wood stock m2000 magazine magazine extension mag tube manual misfire missing camo mod mr1 nordic nova parts pictures problem recoil release replacement stock sbe sbe 2 serial number shotgun sidearmor sights steady stock stoeger stoeger 2000 super nova supernova supernova eject problem synthetic tactical thread trick shooting upgrade vinci walnut waterfowl wtt barrels