I just registered on the forum although I have owned my T91 16" upper for about 3 years now. The sad thing is I haven't even shot it yet.

I am from Boise, Idaho USA, have lived here for about 40 years. I have been building AR rifles and carbines for about the same number of years. I am also a long range target rifle shooter (Palma) and compete at distances from 600 to 1000 yards.
I have recently been getting into AK 47's and 74's. Several years ago I built a 7.62x39 AR and a 5.45x39 AR.
Best regards to all!
Don