Had fun building this mag from Spare parts...this is my Set up...X-Valve, RPG Shadow Rail, Exile body, Sub-Zero feed neck, 15* VASA, Gas thru, G-force Frame, CP dirrect mount on/off ASA, Palmers Micro Rock, Freak back w/Doc's shorty tip:

but of course im still trying to find new grips for it as well as a way to make it a sleeper? its a nice set up...but you know how maggots are...always looking for something else to do to our Mags...haha! as is its a perfect build for me tho...so its all good!