Id like to trade my 20 flat top AR upper for your 16 flat top upper. This is off a rifle I got in trade a few weeks ago. Total round count is less that 100. (80 by my math). The upper receiver doesnt have any markings on it, but the barrel is stamped DPMS 5.56 1-9. The hand guard is a Magpul MOE. If you prefer, I have a generic Del-Ton hand guard I could put on instead (whatever floats your boat). Currently it has a Magpul MBUS flip rear sight on it which I could include with the right trade. Includes bolt assembly and charging handle. I am looking for a lightly used 16 upper. Quad rail would be nice, as I plan to put a forend grip on it. Prefer a low profile gas block (no fixed front sight post). SPF And no Bill, I dont want your f****** SKS!!!