I have a Microtech XM17-E4 in 7.62x39. According to Microtech only 5 of these left the factory as complete rifles. The rest of the 25 were made I to caliber change kits.( I verified this with microtech on 3 separate occasions.) I also have the only left handed bolt for 7.62x39 ever made. The gun is set up right handed . It uses ar15 7.62x39 magazines. 1 will be sold with the gun. TEXT WORKS BEST. NO TRADES