the work ive done to my gun is as follows: XTX reg fitted by me, new O rings throughout, XTX Huub shroud wich i shortend by 2 inches & added a silencer, XTX oversized cocking bolt, brand new BSA beech stock wich i cut down by 2 inches as they are a bit long in the butt as standard. also new sling strap and 3Ms carbon wrap.