Aero Precision M4E1-T 11.5” 5.56 NATO Complete Upper Receiver - 10.3” R-ONE HG - FDE

The Aero Precision M4E1-T 11.5” 5.56 NATO Complete Upper Receiver in Flat Dark Earth (FDE) is designed with both performance and aesthetics in mind. This upper receiver eliminates the forward assist for a streamlined appearance and features a slimline R-ONE handguard with a unique milling profile, giving it a “billet look” while maintaining strength. This design maximizes grip ergonomics and minimizes weight while still providing ample space for various attachments. The proprietary ATLAS attachment system ensures a durable and dependable mounting platform, maintaining a slim profile without compromising on strength and stability.

Features:

• M4E1 Threaded Upper Receiver
• R-ONE Handguard with ATLAS attachment system
• 11.5" 5.56 NATO M4 Carbine Barrel
• Low Profile Gas Block
• Carbine-Length Gas Tube
• QPQ Barrel Finish
• M4 Feed Ramp Extension
• HP and MPI Tested Barrel
• Standard A2 Flash Hider
• 10.3” R-ONE handguard
• Laser engraved t-marks
• Magpul FDE Cerakote finish

This complete upper receiver includes the M4E1 Threaded Upper Receiver, a 10.3” R-ONE Handguard, and an 11.5" 5.56x45mm NATO M4 Carbine Barrel with a low-profile gas block and carbine-length gas tube. The product comes fully assembled, although it does not include a bolt carrier group (BCG) or charging handle, which can be added separately. The 11.5" barrel, finished with a QPQ process, has M4 feed ramps, a .750" gas block journal, and a standard A2 flash hider. It is HP and MPI tested to ensure quality and reliability.