2018-08-29 Shop Tour Welcome to Arizona Response Systems. Owner and Master Gunsmith, Mark Graham. Our office where we keep an extensive research library. Our primary work area. Mark working on a client's weapon. 2nd work area 3rd work area, HKs and AKs are built in this area. Our walk-in vault for inventory and pending orders. Mark looking over a part while providing a vast amount of professional and technical experience. Mill & Lathe services available. Machining selector stop plates for AK-47s. Turning fake-silencers for AK-47s. « ‹ of 2 › »