The M4E1 Threaded Upper Receiver features a new angular machined design that helps it stand apart from standard mil-spec upper receivers. This upper receiver features the same enhanced body profile as our M4E1 Enhanced Upper Receiver but is threaded to accept a standard AR15 barrel nut.
Testing some heavier bullets in my Aero Precision M5E1 AR-10 chambered in .308 Win. Since I bought the parts for this gun some things have changed. Schuyler Arms is where I bought my builder set but they no longer seem to stock Aero Precision or Ballistic Advantage.
1.72" inside diameter (from barrel nut cut to forward end) fits most muzzle devices and 1.5" suppressors Compatible with low profile gas blocks Quick disconnect sling socket at the 3, 6 and 9 o'clock positions While designed for use with Aero Precision M4E1 Enhanced upper receivers the Enhanced Gen 2 Handguards can also be used with standard ...
Aug 24, 2019 · I'm a big fan of the Aero Precision M4E1 uppers as they allow you to accurately torque their proprietary barrel nut without any concerns for gas tube alignment. It's a stronger upper with the barrel attachment thread where it should be imho as a mechanical engineer. This is the plan for this upper: Wilson Combat 18" Barrel