Aero Precision M5E1 Barreled AR-10 Upper Receiver - .308 Win - 20" - FDE - CMV Rifle Length - Enhanced 16.6"

The Aero Precision M5E1 Barreled AR-10 Upper Receiver combines an M5E1 enhanced receiver, forged from 7075-T6 aluminum with M4 feed ramps, .2795 takedown pin holes, and laser-engraved T-marks, with the handguard mounting platform forged into the upper with a 20-inch .308 Win 4150 chrome moly vanadium rifle-length barrel and a 16.6-inch Enhanced Gen 2 handguard, ready for a bolt carrier group and charging handle.

Features:

• 20-inch .308 Win 4150 chrome moly vanadium rifle-length barrel, 1:10 twist, 5/8x24 thread
• 16.6-inch Enhanced Gen 2 handguard
• M5E1 enhanced 7075-T6 receiver with M4 feed ramps
• Low-profile gas block and gas tube installed
• Forward assist and port door installed
• Comes assembled; no bolt carrier group or charging handle included
• AR-10 platform with standard mil-spec fit
• Flat dark earth (FDE) finish

The Enhanced Gen 2 handguard is a one-piece free-float design with built-in anti-rotation tabs, scalloped rails, a continuous top rail, and quick-disconnect sling sockets. The rifle-length gas system gives a gentler recoil impulse and smoother cycling. Aero lists a 1:10 twist and a 5/8x24 thread.

The barrel is machined for .308 Win builds on standard AR-308 parts, with a QPQ finish inside and out and an HP and MPI tested barrel. You only need to add a bolt carrier group and a charging handle.

Aero Precision brings aerospace-grade manufacturing standards to every receiver, barrel, and small part it builds, so components fit together without extra bench work.