Aero Precision M5 Barreled AR-10 Upper Receiver - .308 Win - 20" - FDE - Rifle Length - R-ONE 15"

The Aero Precision M5 Barreled AR-10 Upper Receiver combines an M5 upper receiver for the .308 platform, designed to accept standard AR-308 (DPMS-pattern) components with a 20-inch .308 Win rifle-length barrel and a 15-inch ATLAS R-ONE handguard, ready for a bolt carrier group and charging handle.

Features:

• 20-inch .308 Win rifle-length barrel
• 15-inch ATLAS R-ONE handguard
• M5 upper receiver for standard AR-308 components
• 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 ATLAS R-ONE handguard uses two mirrored, tapered locking nuts for evenly distributed clamping pressure and adds a full-length top Picatinny rail with an octagonal M-LOK profile. The rifle-length gas system gives a gentler recoil impulse and smoother cycling.

The barrel is machined for .308 Win builds on standard AR-308 parts. This assembled upper saves you the work of fitting a barrel, gas system, and handguard, so you only need to add a bolt carrier group, a charging handle, and a muzzle device if one is not included.

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