Forged from 7075-T6 aluminum, this assembled upper is precision machined to mil-spec M16/M4 specifications and features enlarged feedramps. These uppers are also made with an enlarged ejection port for reliable function with wide cartridges such as 9mm, 40 S&W, 45 ACP, 10mm, 7.62x39, 6.5 Grendel, .458 SOCOM, .450 Bushmaster, .50 Beowulf, etc.

Bexar Arms offers receiver face squaring for an additional $10 charge. More information on receiver squaring can be found below.

Features

Port door opening has been enlarged to fit wide cartridges such as 9mm, 40 S&W, 45 ACP, 10mm, 7.62x39, 6.5 Grendel, .458 SOCOM, .450 Bushmaster, .50 Beowulf, etc.

Works with AR15 lower receivers

.250 takedown pin holes

Laser engraved T-marks

"XL" portion of Aero Logo on Tang

Compatible with AR15 port door and forward assist

8.35oz

100% Made in USA

Squaring the Receiver Face

At Bexar Arms, we offer you the option to have the face of your receiver squared. Squaring the face of the receiver is an essential step in accurizing your AR pattern rifle, and ensures your barrel seats firmly and completely with the receiver face and is perfectly inline with the BCG raceway in the upper. This allows for a more consistent bolt engagement which evenly distributes force among all of your bolt lugs instead of only a few. This consistent lockup and complete barrel seating can help increase your AR's maximum accuracy potential as well as extend the life of your bolt. While squaring your receiver face is 100% unnecessary for your rifle to function, if you're looking to squeeze the absolute most performance out of your AR pattern rifle, we highly recommend it!

To learn more about receiver squaring, click here to see our blog post on the topic!