Aero Precision Assembled AR-15 Uppers

I purchased the Aero Precision Lowers for three AR-15 builds I am doing. I had already purchased one upper for the first lower ordered. I was impressed with the the precise fit of the two parts and decided to wait until the uppers were again on sale. I was not disappointed as the fit for the two uppers with my existing lowers is excellent. Well worth the wait and price.