Aero Precision M4E1-T 5.56 NATO Complete Upper Receiver - 11.5" - ODG Anodized

The Aero Precision M4E1-T 5.56 NATO is a complete upper receiver designed for AR-15 platform rifles. This upper prioritizes functionality and customization. The M4E1 Threaded Assembled Upper Receiver features a new enhanced design for a sleek look and easy integration with M-LOK handguards. It includes a port door and forward assist and is available in an OD green anodized finish.

Features:

• M4E1 Threaded Assembled Upper Receiver
• Laser engraved T-marks
  10.3" ATLAS R-ONE M-LOK handguard
• 11.5" 5.56 NATO barrel with carbine-length gas system
• 1/7 twist rate, government profile barrel
• M4 feed ramps
• HP (High Pressure) and MPI (Magnetic Particle Inspected) tested barrel
• Standard A2 flash hider
• Made in America
• ODG anodized finish

The upper comes with a pre-assembled 10.3" ATLAS R-ONE M-LOK handguard, offering plenty of space for mounting accessories. The 11.5" barrel is chambered in 5.56 NATO and features a carbine-length gas system for reliable operation. The barrel is constructed from 4150 chrome-moly vanadium steel with a QPQ finish for enhanced durability and corrosion resistance. It has a 1/7 twist rate and a government profile for a good balance of weight and handling.