Do not hesitate - Aero Precision M4E1-T 12.5in 5.56 NATO Complete Upper Receiver with Flash Hider w/ R-One Handguard

Aero precision makes quality parts and this upper is no exception. I bought this upper from opticsplanet while on sale for a deep discount compared to aero precision own website. While aero website had none in stock at all, opticsplanet did have them in stock and on sale no less so I jumped on it, shipping was fast to arrive at usps but then apparently traveled in circles for a week before arriving to my door. But I couldn't be happier with this complete upper receiver. Just add your favorite charging handle and bolt carrier group and your gtg. After taking this to the range I can attest that the groupings I have been getting, very accurate and consistent. Do not hesitate to buy this upper from opticsplanet.