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

The Aero Precision M4E1-T 5.56 NATO is a fully assembled upper receiver for AR-15 rifles, focusing on both functionality and customization. Its M4E1 Threaded Assembled Upper Receiver showcases a modern, sleek design and is optimized for seamless integration with M-LOK handguards. This model includes a port door and forward assist and comes in an attractive Kodiak Brown 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
• Kodiak Brown anodized finish

The upper receiver is pre-assembled with a 10.3" ATLAS R-ONE M-LOK handguard, providing ample space for accessories. The 11.5" barrel, made from durable 4150 chrome-moly vanadium steel with a QPQ finish, is chambered in 5.56 NATO and features a carbine-length gas system for reliable performance. With a 1/7 twist rate and government profile, this barrel offers an excellent balance of weight and handling.