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

This week I built my first AR. I decided to use all Aero components, and I was not disappointed, Works like a charm. There’s a lot to be said to use the same manufacture . For the money you can’t beat it. I would buy this again. The hand guard is awsome it’s light weight and plenty to work with when adding ginger bread.