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Questions & Answers
Will this barrel fit in a mil spec AR-15 upper? Expert Answer

Yes, the Jacob Grey Firearms 9mm Luger 1/2x28 Barrel will fit a Milspec AR15 upper receiver.

by Ethan, Gear Expert, October 25, 2022
Are these feed ramped? I want them reliable for defense ammunition. Expert Answer

These Jacob Grey Custom 9mm Luger 1/2x28 Barrels do have an integrated feed ramp.

by Hunter, Gear Expert, July 7, 2022
Customer Reviews
Helpful Negative Review Barrel Length by Cody, Verified Owner, March 23, 2022
Does the quality of this barrel seem to be very nice? Yes. However, the actual length of the barrel is not the length advertised. If you are looking for a barrel which will just pass your handgaurd, then this barrel does not have the correct dimensio...
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4/16 found this helpful
Most Recent Reviews Incorrect listing information! by BOBBY, Verified Owner, November 20, 2022
Turns out this is a nice barrel but the listing has wrong information! The correct thread pitch is 1/2 X 36"NOT 1/2 X 28" which is what the listing describes. I bought this barrel and a Kaw Valley slim XL compensator in 1/2 X 28" and I destroyed the ...
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5/9 found this helpful
Read All 2 Reviews

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Product Info for Jacob Grey Firearms 9mm Luger Barrel

9mm lightweight profile barrel made from 4150 chrome-moly steel. Pairs perfectly with JG low profile handguard.image

DISCLAIMER: Before any muzzle device make sure a 9mm round will drop freely through the device center

Specifications for Jacob Grey Firearms 9mm Luger Barrel:

Manufacturer: Jacob Grey Firearms
Color: Black
Finish: QPQ Salt Bath Nitride
Fabric/Material: 4150 CMV Steel
Caliber: 9mm Luger
Barrel Profile: Light Weight
Threads per Inch: 1/2x36
Barrel Twist Rate: 1-10
Barrel Material: 4150 CMV Steel
Gun Make: AR Platform
Gun Model: AR-9, AR-15
Condition: New
Rifling Profile: Button Rifling

Features of Jacob Grey Firearms 9mm Luger Barrel:

  • Integrated feed ramp;
  • Designed to work with both Colt and Glock style AR-9 builds;
  • Specifically designed to complement the Jacob Grey JG-9 Upper receiver.

Package Contents:

  • Jacob Grey Firearms 9mm Luger Barrel

Jacob Grey Firearms 9mm Luger Barrel Orderable Models

List of Orderable Models

Jacob Grey Firearms 5.5in 9mm Luger 1/2x36 Barrel, AR-9, Black, 9MM6B , MPN: 9MM6B , Code: 4M6-ATB-BVE5-9MM6B
Jacob Grey Firearms 16in 9mm Luger 1/2x36 Barrel, AR-9, Black, 9MM16B , MPN: 9MM16B , UPC: 850030294302 , Code: 4M6-ATB-BVE5-9MM16B

Jacob Grey Firearms 9mm Luger Barrel Unavailable & Discontinued Models

List of Unorderable Models

Jacob Grey Firearms 4in 9mm Luger 1/2x36 Barrel, AR-9, Black, 9MM4B , MPN: 9MM4B , UPC: 850030294319 , Code: 4M6-ATB-BVE5-9MM4B
USED Jacob Grey Firearms 5.5in 9mm Luger 1/2x36 Barrel, AR-9, Black, 9MM6B, EDEMO3, Condition Parts Only/Salvage, Wrong Product , MPN: 9MM6B-EDEMO3 , Code: 4M6-ATB-BVE5-9MM6B-EDEMO-WP-F
USED Jacob Grey Firearms 6in 9mm Luger 1/2x28 Barrel, AR-9, Black, 9MM6B, EDEMO2, Condition Fair, Used , MPN: 9MM6B-EDEMO2 , Code: 4M6-ATB-BVE5-9MM6B-EDEMO-US-D
USED Jacob Grey Firearms 6in 9mm Luger 1/2x28 Barrel, AR-9, Black, 9MM6B, EDEMO1, Used, Condition Fair , MPN: 9MM6B-EDEMO1 , Code: 4M6-ATB-BVE5-9MM6B-EDEMO1
DEMO, Jacob Grey Firearms 16in 9mm Luger 1/2x36 Barrel, AR-9, Black, 9MM16B , MPN: 9MM16B-DEMO , Code: 4M6-ATB-BVE5-9MM16B-DEMO
USED Jacob Grey Firearms 8.3in 9mm Luger 1/2x28 Barrel, AR-9, Black, 9MM83B, EDEMO1, Used, Condition Fair, Scratches , MPN: 9MM83B-EDEMO1 , Code: 4M6-ATB-BVE5-9MM83B-EDEMO-SC-D
Jacob Grey Firearms 7in 9mm Luger 1/2x36 Barrel, AR-9, Black, 9MM7B , MPN: 9MM7B , UPC: 850030294364 , Code: 4M6-ATB-BVE5-9MM7B
Jacob Grey Firearms 8.3in 9mm Luger 1/2x28 Barrel, AR-9, Black, 9MM83B , MPN: 9MM83B , UPC: 860007987311 , Code: 4M6-ATB-BVE5-9MM83B
Jacob Grey Firearms 10in 9mm Luger 1/2x36 Barrel, AR-9, Black, 9MM10B , MPN: 9MM10B , UPC: 850030294265 , Code: 4M6-ATB-BVE5-9MM10B
Jacob Grey Firearms 11in 9mm Luger 1/2x36 Barrel, AR-9, Black, 9MM11B , MPN: 9MM11B , UPC: 860007987304 , Code: 4M6-ATB-BVE5-9MM11B
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