Ergo

Use the Ergo Grip Tactical Stock Adaptor to install AR-15 type stocks and pistol grips on your Mossberg 500/590 shotguns. - Use any style AR type collapsible buttstock and pistol grip combination - This stock adapter has the proper drop designed in so factory sights can be used. (Bead Rifle and Ghost Ring Sights) - Made from glass filled polymer - Includes mounting hardware