Description
Start your next AR-15 build with the Sons of Liberty Gun Works M4-L89 CHF 5.56 NATO Barreled Upper Receiver. Designed for performance, this upper includes a 13.9-inch barrel with a mid-length gas system, constructed from high-quality 4150 CMV steel. The barrel has a 1:7 twist rate and 1/2x28 threading, making it compatible with a wide range of muzzle devices.
Features:
- Chambered in 5.56 NATO
- 13.9” 4150 CMV barrel, QPQ finish
- Mid-length gas system
- 1:7 twist rate
- 1/2x28 threads
- 13” L89 Free Float M-LOK Handguard
- Drive Lock system
- Black
The M4-L89 upper is equipped with a free-float L89 M-LOK handguard featuring the "Drive Lock" system, providing a secure platform for mounting accessories. The integrated Picatinny top rail offers additional space for other attachments, giving you the flexibility to tailor your AR-15 to your specific needs.
Specifications
Barrel Coating: QPQ Nitride
Barrel Length: 13.9
Barrel Material: 41V50 Chrome Moly Vanadium Steel
Brand: Sons of Liberty Gun Works
Caliber Gauge: 5.56 NATO
Color: Black
Gas System Length: Mid-Length
Gas System Type: Direct Impingement
Handguard: 13 in M-LOK Rail
Thread Pattern: 1/2 X 28
Twist Rate: 1:7
MPN#: M4L89UPPER-13.9-CHF-556-NMD
