I have a Stag flat top AR upper for trade. Barrel is marked 5.56 Nato 1/7, Govt Profile. F marked FSB. 16" with flash suppressor. Mid length gas system. It is in unfired condition. M4 feed ramps, T marked upper.
I'm looking for a 20" upper. A2 or A4. It need not be brand new but not too many rounds down the tube. I can part with some cash depending on what you have.