Sons of Liberty Gun Works M4-89 5.56 AR-15 Upper - 13.7"
AR-15 Partial Upper Receiver
Out of stock
Sons of Liberty Gun Works M4-89 5.56 AR-15 Upper - 13.7"
$950.00
Specifications:
- Handguard Length: 13"
- Barrel: Sons of Liberty Gun Works 4150CoMOV 1:7 MPI HPT Barrel
- Barrel Steel: 4150 CrMoV (Chrome Moly Vanadium per MIL-B-11595E)
- Twist Rate: 1/7 Twist Six Groove
- Thread Pitch: 1/2-28 Threaded Muzzle
- Muzzle Device: NOX Keymo Muzzle Device
- Gas Block: .750″ Gas Block Journal with appropriately sized gas port
- Gas Length: Mid
- Barrel Finish: QPQ Corrosion Resistant Finish
- Barrel Extension: QPQ coated M4 Feed Ramp Extension
- High Pressure (proof) Tested (HPT)
- Magnetic Particle Inspected (MPI)
- Weight: 3 lbs 6.6 oz
Please NOTE: Bolt carrier group and charging handle is not included. This upper is pinned.
| SKU | M489UPPER-13.7-556 |
|---|---|
| Product Type | AR-15 Partial Upper Receiver |
| Manufacturer | Sons of Liberty Gun Works |
| Thread Pitch | 1/2x28 (.22 cal) |
| Twist Rate | 1:7 |
| Color | Black |
| Gas System Length | Mid |
| Rail Length | 13" |
| Mount | M-LOK |
| Platform | AR-15 |
| Barrel Length | 13.7" |
| Caliber | 5.56 NATO |
| Threaded | Yes |
