Aero Precision M4E1-T Threaded 5.56 NATO Government Profile AR-15 Barreled Upper - Carbine - 11.4" MOD 4 - 12.5"

The Aero Precision M4E1-T Barreled Upper Receiver combines a 12.5-inch 5.56 NATO carbine-length barrel with a threaded M4E1 upper and the MOD 4 11.4-inch handguard, offering a balanced blend of durability and control for AR-15 builds. The barrel uses a government profile with a 1/7 twist, .750-inch gas block journal, and QPQ finish, built for consistent performance under sustained use. The MOD 4 handguard, machined from 6061-T6 aluminum, features a rigid structure with minimized optical deflection and a steel barrel nut to reduce point-of-impact shift—ideal for setups with IR laser devices. Its seven-sided M-LOK system and four QD sockets with steel liners support flexible mounting and sling attachment options. Made in the USA, this complete upper is suitable for shooters seeking a robust and configurable upper assembly with enhanced structural stability.

Features:

• Barreled 5.56 NATO upper
• 12.5" government profile barrel
• Threaded M4E1 upper with billet-style enhanced forging
• MOD 4 11.4" handguard with M-LOK slots and QD sockets
• Carbine-length gas system, 1/7 twist, QPQ finish
• Reduced deflection handguard with steel barrel nut
• Includes port door, forward assist, and M4 feed ramps
• Compatible with standard mil-spec AR-15 components
• Assembled and ready for installation