ProMag PM111F - Mossberg Model 500 / 590 (12) Gauge Collapsible (6) Position Stock with Pistol Grip & Fore End.
This stock assembly provides the Mossberg model 500 / 590 12 gauge pump shotgun with a AR-15 M4 (6) position collapsible stock and tactical pistol grip. The set also includes a polymer forearm with Picatinny rails and a removable vertical foregrip. Up to six additional shotshells can be carried on the stock with the removable shell holders. Constructed from injection molded black polymer. All mounting hardware included.
Please note: The Tri-Rail Forearm is for Mossberg 500 series (12) gauge pre-2008 production.
The Tri-Rail Forearm will not fit new Mossberg 500 (12) gauge shotguns the new pinned action bar (Maverick 88 style) forearms. The Tri-Rail Forearm will not fit Maverick 88 shotguns. The Tri-Rail Forearm is only for (12) gauge shotguns.