Looks nice. What kind of finish?
I managed to scarf up a Colt chopped CH from a board member for $35. It wasn't the cleanest job, wasn't refinished, and had a bit of rust on the screw knob. I swapped out the screw, cleaned it up, and am running it on my BM SL. A friend is probably going to be refinishing it for me, and I've already smoothed out some of the rough edges with a file. (The height differences b/w the Colt and BM doesn't effect zero, BTW.)
Of course, not only was mine not as nicely done as yours, but it was also before the real rage for fixed BUIS's really caught on (i.e., before the LMT hit the commercial market, IIRC).
I think you could easily get $50 for it. What is a new BM CH going for these days? (I got one from CDNN a while back for around $65, but they don't have the deal anymore.)
Corey