That is my Mossy 935 DRT in my avatar. It is not the GS model, but it is drilled and tapped from the factory. I added the Choate pistol grip stock and bought a 22" barrel for it. Threw a set of Tru Glo Magnum Gobble Dot sights on it and a Sumtoy choke. Shooting HEVI 13 #7s, and even with the short barrel, it patterns viciously! You won't be disappointed.