Nomercy, I agree with you about the book value, I was only trying to give a general idea of value. The Armalite m15a4 is more or less setup close to your Bushmaster Varminter, it has a 20" stainless barrel, national match 2 stage trigger group, flat-top recvr. with weaver rail, the MSRP on it is $1383, a little more $$$ to start. So we may pay $1100 to buy it new. At this point for the money I would go buy the Bushmaster. But grumpy may not be getting a bad deal here, those C-more sights can approach $300. I would say it depends on condition and how bad he really wants the c-more sight. As far as quality I think they are in the same ballpark.