Kenneth, I would check with Emperor Arms as they have various stocks/grips for their many shotgun models at : Phone: (239) 561-3444 or by online inquiry here : emperorfirearms.com/contact-us.php

Kenneth, Can't easily put a pistol grip on this stock. You can buy a stock that has a pistol grip to put on. Adaptive Tactical has products that will fit. Their pistol grip butt stock model for a 20 ga 870 will work.-----------https://adaptivetactical.com/collections/stocks-and-forends