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- Caliber:
- .300 AAC Blackout
- Overall Length:
- 22.5 in
- Barrel Length:
- 13 in
- Barrel Profile:
- Medium Taper, Pistol Caliber Taper
- Gas System Length:
- Pistol Length
- Barrel Twist Rate:
- 1-8
- Handguard Type:
- Free-Float
- Muzzle Device:
- Brake
- Finish:
- Type III Class 2 Hardcoat Anodized
- Color:
- Black
- Fabric/Material:
- Aerospace Aluminum
- Gas Block Journal Size-Diameter:
- .075 in
- Handguard Length:
- 13.5 in
- Handguard Style:
- Round Rail
- Gun Rail:
- M-LOK
- Gun Type:
- Rifle
- Gun Make:
- AR Platform
- Gun Model:
- AR-15
- Weight:
- 4 lb, 7.7 oz
- Barrel Material:
- Chrome Moly
- Gas Block Journal Size-Length:
- 1.9 in
- Bolt Carrier Group Included:
- MIL-SPEC
- Charging Handle Included:
- MIL-SPEC
- Magazine Included:
- No
- Condition Details:
- Inspect And Rebox
- Condition:
- Used
- Condition Quality:
- Excellent
- Mount Type:
- M-LOK
- Threads per Inch:
- 5/8x24
Code: 4M6-URC-GJUN2-300BO13ULCUA-EDEMO-RE-B
MPN: 300BO13ULCUA-EDEMO
Product Info for Jacob Grey Firearms Ultralight 300 BO Complete Upper Assembly
The Jacob Grey Ultralight Complete Upper Assembly was designed with the next generation AR-15 in mind. This AR-15 complete upper assembly is built around the 7075-T6 billet upper receiver specifically machined and cut in areas where excess material was unnecessary and areas that see excess use and wear, reinforced and strengthened to give a sleek, refined look, without losing the classic lines of the AR-15 platform. It comes standard with the JG designed free float 7-sided M-LOK hand-guard that is also lightweight and leaves plenty of room for customization or the addition of numerous accessories available for the AR-15 platform. The barrel is chambered in 300 Blackout with a 1:8 twist rate. The barrel is machined from 4150 chrome moly steel and black Nitride finished for corrosion resistance and accuracy. Each barrel is individually head-spaced to the Carpenter 158 bolt. Combined with the 8620 steel carrier and black Nitride finish, this complete upper assembly is extremely reliable and smooth shooting.![]()
DISCLAIMER: Firearm specifications are subject to change at any time based on availability and supply chain shortage.
Features of Jacob Grey Firearms Ultralight 300 BO Complete Upper Assembly
- Compatible with most aftermarket/OEM handguards featuring indexing tabs
- Billet 7075-T6 aerospace aluminum
- Jacob Grey lightweight design
- M4 feed ramps
- Machined T-marks
- Laser engraved logo
- MIL-A-8625F Type III Class 2 hardcoat anodized flat black finish
- Compatible with MIL-SPEC AR upper receiver parts
- JG ULTRALIGHT Handguard
Package Contents:
- Jacob Grey Firearms Ultralight 300 BO Complete Upper Assembly
Related Products to Jacob Grey Firearms Ultralight 300 BO Complete Upper Assembly
Jacob Grey Firearms Ultralight 300 BO Complete Upper Assembly Unavailable & Discontinued Models
List of Unorderable Models
- USED, Jacob Grey Firearms Ultralight Complete Upper Assembly, .300 AAC Blackout, 13in, Black, 300BO13ULCUA , MPN: 300BO13ULCUA-EDEMO , Code: 4M6-URC-GJUN2-300BO13ULCUA-EDEMO-RE-B
- DEMO, Jacob Grey Firearms Ultralight Complete Upper Assembly, .300 AAC Blackout, 10.5in, Black, 300BO105ULCUA , MPN: 300BO105ULCUA-DEMO , Code: 4M6-URC-GJUN2-300BO105ULCUA-DEMO
- Jacob Grey Firearms Ultralight Complete Upper Assembly, .300 AAC Blackout, 16in, Black, 300BO16ULCUA , MPN: 300BO16ULCUA , UPC: 850040696042 , Code: 4M6-URC-GJUN2-300BO16ULCUA
- Jacob Grey Firearms Ultralight Complete Upper Assembly, .300 AAC Blackout, 8in, Black, 300BO8ULCUA , MPN: 300BO8ULCUA , UPC: 850040696073 , Code: 4M6-URC-GJUN2-300BO8ULCUA
- Jacob Grey Firearms Ultralight Complete Upper Assembly, .300 AAC Blackout, 10.5in, Black, 300BO105ULCUA , MPN: 300BO105ULCUA , UPC: 850040696066 , Code: 4M6-URC-GJUN2-300BO105ULCUA
- Jacob Grey Firearms Ultralight Complete Upper Assembly, .300 AAC Blackout, 13in, Black, 300BO13ULCUA , MPN: 300BO13ULCUA , UPC: 850040696059 , Code: 4M6-URC-GJUN2-300BO13ULCUA







































































































































































































