I have the chance to trade for a Custom Shop Gold Combat with nite sites and Kimpro finish. What can you guys tell me about this gun? It is a series 1 with box and papers. The guy said he bought it new and has put 150 rounds through it. The gun is in at least 95% condition. What is the gun worth and what is the lowdown on the Kimbro finish? Any input on this gun good or bad would be appreciated. For what it is worth if I did the trade I would end up with about $1,200 in the gun. Thanks!