Aero Precision M4E1 16″ Carbine Upper Receiver, Complete

This Aero Precision M4E1 16″ Carbine Upper Receiver, Complete comes completely assembled with 16” 5.56 barrel & the ATLAS R-ONE M-LOK handguard.

This barreled upper receiver group does not include a BCG or charging handle.

The upper receiver is fully assembled with forward assist &  dust cover.

The M4E1 threaded upper is made from forged 7075-T6 aluminum with a billet machined look that matches the lower & handguard. The ATLAS R-ONE free float handguard is 15” and features a 1.3” inner diameter that surrounds the low-profile gas block & carbine-length gas tube.

Features:

• M4E1 threaded upper receiver
• Forged 7075-T6 aluminum
• Assembled forward assist & dust cover
• 15” ATLAS R-ONE M-LOK
• Hard-coat anodized
• 16” 5.56 NATO barrel
• Machined from Chrome Moly Vanadium
• Carbine-length gas system
• 1:7 twist rate
• Threaded 1/2×28
• A2 flash hider
• Salt Bath Nitride finished