I built a Norinco SKS from parts awhile back and i am considering a trade, not because I dislike the rifle, but because i am very interested in an M1 carbine. The SKS has one of the old ATI folding stocks, a Tapco gas tube and handguard on it and two 20 round Tapco mags, I also have 300 rounds of Tula FMJ. What should I ask as far as trade in goes? Obviously, it wont be an even trade. Thanks.