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Questions & Answers
do I have to change anything else to put this on my diamondback 308 Manufacturer Answer

You may need a new gas block and gas tube depending on what type are currently on your rifle. This barrel requires a .750" diameter gas block and a rifle length gas tube.

by Faxon Firearms, Manufacturer, November 27, 2023
will this fit a diamondback 308 upper Expert Answer

Yes, the Faxon Firearms 20in, Medium Taper, 6.5 Creedmoor Barrel will fit and replace the barrel on your Diamondback .308 upper receiver.

by Ethan, Gear Expert, January 31, 2023
Color:
Black Nitride
Fabric/Material:
416R Stainless Steel
Caliber:
6.5mm Creedmoor
Barrel Length:
20 in
Barrel Profile:
Gunner
Gas System Length:
Rifle Length
Gas Block Journal Size-Diameter:
.750 in
Barrel Twist Rate:
1-8
Barrel Material:
416R Stainless Steel
Flutes:
No
Condition:
New
Gun Type:
Rifle
Firearms Threads Per Inch:
5/8x24

Code: 11I-ATB-10BC8R20NMQ-5R-10NGQ-5R-NP3

MPN: 10BC8R20NGQ-5R-NP3

UPC: 816341022072

Product No Longer Available

Product Info for Faxon Firearms 20in, Medium Taper, 6.5 Creedmoor, Rifle Length, 416-R Stainless, QPQ Barrel

Take your aim up a notch with the Faxon Firearms 20in, Medium Taper, 6.5 Creedmoor Barrel. These AR15 Barrels from the vanguard at Faxon Firearms is designed from 416-R aluminum to be stronger and more durable during repeated firings. Nitride treated, inside and out, the Faxon Firearms Rifle Length, 416-R Stainless, QPQ Barrel improves the overall lifetime of your barrel and keeps the elements at bay. Improve your accuracy with the Faxon Firearms Match Series Big Gunner Profile AR10 Barrel and its unrivaled performance.image

Features of Faxon Firearms 20in, Medium Taper, 6.5 Creedmoor Barrel, 11I-BRI-10BC8R20NMQ-5R

  • Barrel Material: 416-R
  • Barrel Type: 5R Button Rifled
  • Barrel Caliber: 6.5 Creedmoor
  • Barrel Twist: 1:8
  • Barrel Length: 20
  • Barrel Profile: Big Gunner
  • Barrel Gas System: Rifle
  • Inside Finish: Salt Bath Nitride
  • Outside Finish: Salt Bath Nitride
  • Muzzle Thread: 5/8-24 TPI
  • Gas Block Diameter: .750"
  • Gas Block Journal Length: 1.9"
  • Barrel Extension: DPMS LR-308 Compatible - NP3 Nickel Teflon Coated
  • Barrel Weight: 2.59lbs
  • Magnetic Particle Inspected.
  • Polished 11-degree Target Crown

Package Contents:

  • Faxon Firearms 20in, Medium Taper, 6.5 Creedmoor, Rifle Length, 416-R Stainless, QPQ Barrel, 11I-BRI-10BC8R20NMQ-5R

Firearm Case

130 / 30
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Ammunition

136 / 36
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Faxon Firearms 20in, Medium Taper, 6.5 Creedmoor, Rifle Length, 416-R Stainless, QPQ Barrel Unavailable & Discontinued Models

List of Unorderable Models

  • Faxon Firearms 20in, Medium Taper, 6.5 Creedmoor, Rifle Length, 416-R Stainless, QPQ Barrel, Black Nitride, 10BC8R20NMQ-5R , MPN: 10BC8R20NGQ-5R-NP3 , UPC: 816341022072 , Code: 11I-ATB-10BC8R20NMQ-5R-10NGQ-5R-NP3
  • DEMO, Faxon Firearms 20in, Medium Taper, 6.5 Creedmoor, Rifle Length, 416-R Stainless, QPQ Barrel, Black Nitride, 10BC8R20NMQ-5R , MPN: 10BC8R20NGQ-5R-NP3-DEMO , Code: 11I-ATB-10BC8R20NMQ-5R-DEMO
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Last updated 2026-09-12 UTC.