Faxon Firearms
Faxon 9" .300 Blackout Gunner Barrel
9" .300 Blackout Gunner-profile match barrel in 416R stainless with QPQ nitride, 5R rifling, and an NP3-coated extension.
Quick Specs
- Price
- $171
- Weight
- N/A
- Brand
- Faxon Firearms
- Category
- barrel
Features
- •9" length
- •.300 AAC Blackout
- •1:8 twist rate
- •Pistol-length gas system
- •QPQ nitride finish
- •416R stainless steel
- •Gunner profile
Where to Buy
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Faxon Firearms 300 Gunner Rifle Barrel, Pistol-Length, 416-R Stainless QPQ Nitride, 5R, NP3 Extension, Black Nitride, 9, 15B38P9NGQ-5R-NP3
Compatibility Tags
Overview
The Faxon 9" .300 Blackout Gunner barrel is a common compact .300 AAC Blackout length for builders who want useful supersonic velocity while keeping a suppressor host short. This is Faxon's 15B38P9NGQ-5R-NP3 match-style configuration, not a basic 4150 CMV Duty Series barrel.
Faxon's proprietary Gunner profile splits the difference between a pencil barrel and a government profile, shaving weight where it matters while retaining enough material at the gas block journal and muzzle for consistent harmonics under sustained fire. The result is a barrel that weighs approximately 1.2 pounds — noticeably lighter than a government profile without the whip and point-of-impact shift issues that plague ultra-thin pencil barrels during rapid strings.
Constructed from 416R stainless steel with a QPQ salt bath nitride finish, 5R rifling, and an NP3-coated barrel extension, this barrel is better treated as Faxon's accuracy-leaning 9-inch Gunner option. The 1:8 twist rate covers common .300BLK supersonic loads and many subsonic setups, while the pistol-length gas system keeps the compact build recipe conventional.
Key Features
- 9" barrel length is a common compact .300BLK suppressor-host choice
- Gunner profile balances weight savings with thermal and harmonic stability
- 416R stainless steel construction with QPQ nitride finish
- 5R rifling and NP3-coated barrel extension
- 1:8 twist rate for common .300BLK loads
- Pistol-length gas system tuned for supersonic and subsonic loads
- .750" gas journal accepts standard gas blocks
- 5/8x24 muzzle threads for .30 caliber muzzle devices and suppressors
Pros
- +9" length balances compact overall length with practical .300BLK performance
- +Gunner profile provides excellent weight-to-rigidity ratio
- +Budget-friendly pricing makes quality .300BLK builds accessible
- +QPQ nitride finish delivers strong corrosion and wear resistance
- +416R/5R/NP3 match-style configuration
- +1:8 twist works for common supersonic and many subsonic loads
Cons
- −Pistol-length gas system can be over-gassed with some supersonic loads
- −May benefit from adjustable gas block for optimal suppressed/unsuppressed tuning
- −Gunner profile less rigid than heavy or bull barrel profiles for precision shooting
- −Requires SBR paperwork or pistol configuration
Detailed Specifications
- lengths
- 9"
- chamber
- .300 AAC Blackout
- Material
- 416R stainless steel
- finish
- QPQ nitride (salt bath nitride)
- twist
- 1:8
- grooves
- 5R rifling
- gasSystem
- Pistol-length
- gasJournal
- .750"
- muzzleThreads
- 5/8x24 TPI
- profile
- Gunner (pencil/government hybrid)
- weight
- Approximately 1.2 lbs
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Build Your Custom Configuration
Add the Faxon 9" .300 Blackout Gunner Barrel to your build and see how it enhances your platform.