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

The Aero Precision M4E1-T Barreled Upper Receiver utilizes a 12.5-inch 5.56 NATO carbine-length barrel, threaded M4E1 upper and MOD 4 11.4-inch handguard to provide a sturdy, well-balanced build for AR-15s. The barrel features a government profile with a 1/7 rate of twist, .750-inch gas block journal, and QPQ finish, built for consistent performance and use with suppressors. The MOD 4 handguard’s rigid 6061-T6 aluminum build minimizes optical deflection, and its steel barrel nut reduces point-of-impact shift—perfect for IR laser device setups. Flexible mounting and sling options are supported by its seven-sided M-LOK system and four QD sockets with steel liners. This complete upper is made in the USA.

Features:

• Barreled 5.56 NATO AR-15 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
• Kodiak Brown Anodized finish
• 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