I just picked up this Mossy 500 Tactical Persuader. It came factory with the pistol grip, adjustable buttstock and 5 shell clip. I want to try a straight stock compared to the pistol grip Is there an adapter that will let me attach that adjustable buttstock to the gun without the pistol grip? I would like to not spend $80-$120 on a whole new buttstock, when I like the one it has. I just need to be able to attach it without the pistol grip and still work in my hands. Maybe it's not possible. Input please?