Ergo 4454 Stock Adapter Polymer Black for Mossberg 500 590

Use the ERGO Grip Tactical Stock Adapter to install A15 stocks and pistol grips on Mossberg 500/590 shotguns. Replaces the standard butt stock, and an AR-15 buffer tube, stock and pistol grip are then installed. The ERGO Stock Adapter no longer requires a mounting screw for installation. Features Made from glass filled polymer Proper drop design so factory sights can be used Adjustable length of pull from 10" to 13" Accommodates mil spec or commercial buffer tubes