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Code: 4M6-URC-BVE9-556N105CUA
MPN: 556N105CUA
UPC: 850030294838

Code: 4M6-URC-BVE9-556N13CUA
MPN: 556N13CUA
UPC: 850030294845

Code: 4M6-URC-BVE9-556N75CUA
MPN: 556N75CUA
UPC: 850030294821
The Jacob Grey Upper Receiver is chambered in 5.56 NATO and built around a 1/7 twist barrel. 7-sided M-LOK Handguard and 7075 Aluminum Upper Receiver. These uppers have a pistol-length gas system that is combined with a low-profile gas block, which provides reliability under any condition. The handguard provides a tactical picatinny rail along the top which allows room for front and rear sights and reduces weight due to less material than standard full length picatinny rails. This upper receiver also includes the JG 7075 billet machined aluminum dust cover which gives this Upper Receiver a sleek perfectly matched look that would be a worthy addition to any quality build. The Jacob Grey Billet Aluminum Upper Receiver features a No forward assist function due to the exacting tolerances and reliability of its functioning.![]()
To prevent any confusion, the purchase of all Jacob Grey Complete Uppers includes the Jacob Grey ambidextrous charging handle & F/A rated BCG.
NOTE: Complete uppers with barrels under 16 in length are only for use on AR-15 pistol lowers, legal Short-Barreled Rifles (SBR), or must have a muzzle device permanently attached to bring the length to at least 16.
DISCLAIMER: Firearm specifications are subject to change at any time based on availability and supply chain shortage.
| Manufacturer: | Jacob Grey Firearms |
| Caliber: | 5.56x45mm NATO |
| Barrel Profile: | Government |
| Gas System Length: | Carbine Length |
| Barrel Twist Rate: | 1-7 |
| Threads per Inch: | 1/2x28 |
| Handguard Type: | Free-Float |
| Muzzle Device: | Flash Hider |
| Color: | Black |
| Fabric/Material: | 7075 T6 Aluminum, Chrome Moly Vanadium |
| Gas Block Journal Size-Diameter: | .750 in |
| Handguard Style: | Round Rail |
| Gun Rail: | M-LOK |
| Gun Type: | Rifle |
| Gun Make: | AR Platform |
| Gun Model: | AR-15 |
| Barrel Material: | Chrome Moly |
| Gas Block Journal Size-Length: | 1.9 in |
| Bolt Carrier Group Included: | MIL-SPEC |
| Magazine Included: | No |
| Charging Handle Included: | MIL-SPEC |
| Mount Type: | M-LOK |