Has anyone cut away the strap that connects the butt of the stock to the bottom of the pistol grip? Does the butt portion flex? Looks like the structural integrity of the ATI stock is pretty solid, but wondering if removing the strap will cause the stock to crack or fail. A little flexing is no problem. Has anyone cut theirs off? Anyone done this with lots of rounds through the gun? FYI. The cavity in the ATI stock butt is interesting potential survival storage.