I had a model 11 Trophy Hunter XP in a .223 that I was unhappy with the accuracy on. After bedding the stock, adjusting the trigger, handloading some ammo, I've decided to regroup. I have a .20 Tactical Barral that matches up perfect and a stock that was used on a Model 12. My gun has the DBM, and the stock of course was made for a blind mag. Is there any way to purchase the parts necessary to convert my gun to a internal blind mad so that it will work with the stock I already have?