Great upper - Aero Precision M4E1 16in 5.56 ATLAS S-ONE M-LOK Complete Upper Receiver with Flash Hider

This is a nice looking, sharp shooting upper. Never shoot an AR15 before putting this together. Everything functioned perfectly with no misfires. I ran about 120 rounds of 223 at the range. My only compliant would be that this is listed as a complete upper with no BCG. I'm new to this, so i could be wrong, but not having a BCG is like selling a 80% upper. Would i recommend this? Yes i would.