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Jacob Grey 5.56 Nato Complete Upper Assembly 16″




Action:  Semi-Automatic

Barrel Length: 16 in

Caliber:  5.56 NATO/.223 Rem

Ejection Orientation:  Right-Handed Ejection

Operation Type:  Direct Impingement

Barrel Coating: Nitride

Barrel Finish:  Nitride

Barrel Lining: Nitride

Barrel Material: Chrome Moly Vanadium

Barrel Profile: Gov 16” 5.56 NATO 1/2X28 Threaded Barrel

Barrel Twist Rate: 1/7 Twist

Gas System Type: Pistol Length with Low Profile Gas Block

Handguard Attachment Interface: M-LOK

Handguard Color: Black

Handguard Length: 15 in

Handguard Model: 15″ Jacob Grey 7-sided M-LOK Tactical Handguard

Line / Series: Jacob Grey JG-15

Muzzle Device Function: Flash Hider

Pivot/Takedown Pin Size: .277 in

Upper Receiver Finish/Coating: Class III Type 2 Hard Coat Anodizing

Upper Receiver Material: 7075 T6 Aluminum

BCG: Yes

Charging Handle: Yes


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The Jacob Grey 16″ Upper Receiver is chambered in 5.56 NATO and built around a 16” 1/7 twist barrel.  JG 15” 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.


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