Nice, but not as nice as i'd hoped - Primary Weapons Systems MK116 PRO 16 inch Upper Receiver

I paired this upper with a PWS complete lower I bought used locally. Took it to the range and shot 150 rds - had one stovepipe at about the 90-95 round count. No other malfunctions or problems. The reason for 4 stars is it wasn't as smooth as I had hoped. Nothing specifically wrong, just not nice or smooth enough to justify the full 5 stars. Components and construction seem high quality, but finish a bit on the weak side - more wear than should be after only 150 rds. Got a really good deal, since this particular model (Mk116 Pro) has been discontinued by PWS.