“I'm very happy with the quality of the Upper Receiver, and extremely happy with the price.
AoA is the best place to get Aero Precision products.
I'll be back!”
“Top notch quality and fitment with the M4E1 lower even without using the built in tension screw. Threaded forward assist pin is a nice touch too. Flawless machining inside and out!”
“Nice to have a receiver that looks like billet without the cost. On top of that the forward assist, bolt catch, rear detent spring are all threaded for ease of installation. There is also a threaded slack adjuster to minimize movement in upper and lower.”
