Better than expect - TRYBE Defense AR-15 10.5in .300 Blackout M-LOK Complete Upper Receiver

I purchased this upper on a whim. It was priced right for what I needed it to be. Being completely knew to .300 AAC, and given the price, my expectations were low. When it was received, I not iced that none of the laser etching was anywhere to be seen except for on the barrel. I had planned on painting anyway, so no biggie for me. I also noticed that the rail seemed to be a bit subpar. I replaced it immediately with a spare Midwest Industries Combat Rail. A few days later, I went to the range and to my surprise, this thing was not only very accurate, I did not have a single malfunction. I was able to stack 1MOA @50yrds all day with 147gr supers. Color me impressed!