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Description
The Sons of Liberty Gun Works M89 upper receiver is a great option for your next AR-15 build. This upper has a 13.9-inch barrel made from CMV steel with a mid-length gas system. The barrel features a 1:7 twist rate, ideal for stabilizing a wide range of 5.56 NATO ammunition, and is fitted with an Expo Arms FCD Brake that offers compatibility with Dead Air Keymo compatible suppressors.
Features:
- 13.9” 4150 CMV barrel, QPQ finish
- Mid-Length Gas System
- 1:7 twist rate
- 1/2x28 threads
- M89 Free Float Handguard
- Engraved T-marks
- Drivelock system
- Expo Arms FCD Brake
- Black
The upper receiver is equipped with a free-float M89 handguard, providing plenty of space for mounting lights, lasers, grips, and other accessories via its M-LOK system. The Drivelock system ensures the handguard is securely and rigidly attached, and the engraved T-marks allow for precise and easy accessory placement.
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
Finish: Hardcoat Anodized
Gas System Length: Mid-Length
Gas System Type: Direct Impingement
Handguard: M-LOK
Muzzle Device: Expo Arms/FCD Extended Single Chamber Muzzle Brake Keymo Mount
Thread Pattern: 1/2 X 28
Twist Rate: 1:7
MPN#: M489UPPER-13.9-556-CHF-PAE-XP
