I built my first 1911 from a Fusion Firearms 'kit'. I thought it would be easier having the frame and slide already mated, turns out I was right. With my Kuhnhausen book in hand and this forum on the screen, I got it done. The frame and slide are super tight, since most of the pieces came from the same company, any 'mistakes' would probably be mine. It was a bit of a toss up between Fusion and buying the kit parts from Caspian. The gun has run flawlessly, (once I got the hang of building the correct reloads!),