SOLGW M4-89 13/7″ Barrel Upper Receiver w/ M-LOK 89 Handguard (No BCG or CH)
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Sons Of Liberty Gun Works M4-89 13.7 Barrel 5.56 NATO Upper Receiver
Sons of Liberty Gun Works believes in Quality Mil-Spec or better parts. They believe there is no substitute for quality and that your gun should be built right the first time, ready for hard use right out of the box. They believe a quality, accurate and long-lasting barrel is the heart of a Combat Grade weapon. They believe in properly tuned weapons using the correct gas system length and quality buffer system components. All of these beliefs are forged together to bring you the SOLGW M4-89 Complete Upper with 13.7″ 5.56 NATO Combat Barrel and a NOX Muzzle Device. Featuring the M89 Handguard.
SOLGW believes in their products and backs them up with a Lifetime Warranty.
Does not include a BCG or Charging Handle. We carry several different options for bolt carrier groups and charging handles, including SOLGW.
SOLGW didn’t reinvent the wheel…they just made it better.
Features:
- 13.7” 5.56 NATO barrel (muzzle device is pinned and welded for 16″ OAL)
- 4150 chrome moly vanadium steel barrel
- High Pressure (proof) Tested (HPT)
- Magnetic Particle Inspected (MPI)
- QPQ Corrosion Resistant Finish
- 1/7 twist rate
- Mid-length gas system
- 4140 steel .750” gas block
- M89 M-LOK free float handguard
- 1/2×28 with SOLGW NOX muzzle device
- 7075-T6 aluminum Cerra forged receiver
- Type III Class 2 hardcoat anodized black
Specifications:
- Barrel Coating: Salt Bath Nitride
- Barrel Contour: Government
- Barrel Length: 13.7″ with pined and welded NOX for 16″ total length
- Barrel Material: 41V50 Chrome Moly Vanadium Steel
- Caliber: 5.56 NATO
- Gas System Length: Mid-Length
- Gas System Type: Direct Impingement
- Handguard: 13″ M4-89 M-LOK Rail
- Muzzle Device: SOLGW NOX Muzzle Device
- Thread Pattern: 1/2 X 28
- Twist Rate: 1:7
Don't Forget Your BCG and Charging Handle
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Sons of Liberty Gun Works
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