FAXON SPORT 10.5" 300 BLK AR15 PISTOL
Faxon
$989.00
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Faxon
FAXON SPORT 10.5" 300 BLK AR15 PISTOL
Faxon Sport 10.5" 300 BLK AR15 Pistol
The Faxon Sport 10.5" 300 BLK AR15 Pistol is a purpose-built, compact 300 Blackout host for shooters who want tight-space handling, a clean parts ecosystem, and a platform that makes sense the moment it comes out of the box. If you’ve ever priced out a short 300 BLK build and wondered where the “unknowns” are hiding (gas, cycling, parts fitment, and long-term reliability), this pistol is designed to remove that decision gap with a vetted component stack.
At the core is the Faxon Duty Series Gunner Profile 10.5" 300 BLK barrel (1:8 twist)—manufactured from 4150 CMV steel and salt-bath nitrided for durability and corrosion resistance. The pistol-length gas system aligns with the real-world intent of short 300 BLK setups: fast handling, practical defensive distances, and strong suppressed potential with the right ammo and tuning.
Built by an American manufacturer. Faxon Firearms is a family-owned manufacturer founded in 2012 and headquartered in Greater Cincinnati, Ohio. The Faxon family’s manufacturing and engineering roots date back to 1978—producing mission-critical components for aerospace, defense, and industrial programs. That same process control and machining discipline carries directly into our firearms, barrels, receivers, and critical small parts.
Key Features
- 10.5" 300 BLK Duty Series Gunner Profile barrel (4150 CMV, salt-bath nitride, 1:8 twist)
- Pistol-length gas system for short-barrel 300 BLK function and tuning flexibility
- Enhanced forged upper receiver (Faxon) for a durable, duty-minded foundation
- Forged lower receiver with tensioning screw to help tighten receiver fit
- Faxon Streamline 9" M-LOK handguard with top rail for accessories and lights
- Faxon Superfinished 5.56 M16 BCG – Nitride for smooth cycling and easier cleaning
- Faxon fixed .750" low-profile gas block + pistol-length stainless gas tube
- Faxon .30 cal A2 flash hider
- Includes Magpul Gen M2 30-round magazine
Use Cases
- Home & property defense: compact handling with 300 BLK’s established short-barrel strengths
- Suppressed readiness: an ideal host for subsonic 300 BLK with the right suppressor and setup
- Truck / pack / tight-space carry: short overall length with a proven, serviceable parts ecosystem
Who it’s for: shooters who want a compact 300 BLK pistol built around known-quality parts and a clear upgrade path (mounts, suppressors, tuning).
Who it’s not for: buyers prioritizing maximum velocity/long-range performance—this is a short-barrel, practical 300 BLK platform by design.
What’s In This Build (Bill of Materials)
- Upper: Faxon Enhanced Forged AR15 Upper Receiver
- Lower: Faxon AR15 Forged Lower Receiver w/ Tensioning Screw
- Barrel: Faxon Duty Series Gunner Profile 10.5" Pistol-Length 300 BLK AR15 Barrel (1:8 Twist)
- Muzzle Device: Faxon .30 Cal A2 Flash Hider
- Handguard: Faxon Streamline Aluminum M-LOK 9" AR15 Handguard
- Gas Block: Faxon Fixed .750" 3 Screw Low Profile Gas Block
- Gas Tube: Faxon Pistol Length Stainless Steel AR Gas Tube
- BCG: Faxon Superfinished 5.56 M16 Bolt Carrier Group – Nitride
- Charging Handle: MIL-SPEC
- Safety: MIL-SPEC
- Trigger: MIL-SPEC
- Stock/Brace: KAK Shockwave 2M Brace
- Grip: A2 Style
- Buffer: 3 oz Carbine
- Magazine: Magpul Gen M2 30 Round Magazine
Explore Related
Warranty
All Faxon Firearms products are backed by our Limited Lifetime Warranty.
For full warranty terms, service instructions, and exclusions, please visit:
https://faxonfirearms.com/warranty-privacy-terms/
For full warranty terms, service instructions, and exclusions, please visit:
https://faxonfirearms.com/warranty-privacy-terms/
FAQs
Is this pistol a good suppressor host for 300 BLK?▾
Yes—10.5" 300 BLK is a popular “do-it-all” short format for suppressed use. Your suppressor choice, ammunition (subsonic vs. supersonic), and buffer/spring setup can change backpressure and cycling behavior, so validate function with your exact loadout.
Will it run both subsonic and supersonic 300 BLK?▾
It’s built around practical 300 BLK use cases including both. Reliability can vary by ammo, magazine, and whether you’re suppressed—confirm performance with your chosen load and consider tuning if you’re optimizing for a specific suppressor/subsonic setup.
What barrel is included, and why does it matter?▾
This build uses the Faxon Duty Series Gunner Profile 10.5" 300 BLK barrel (4150 CMV, nitride, 1:8 twist). 4150 CMV is selected for strength and heat tolerance, and nitride adds wear/corrosion protection—ideal traits for hard-use, compact builds.
Is this made in the USA?▾
Yes. Faxon Firearms is headquartered in Greater Cincinnati, Ohio, and manufactures core components in-house under controlled processes and inspection standards.
What should I pair with it for a suppressed setup?▾
Think in “ecosystem” terms: a .30 cal suppressor, a compatible mount, and tuning components (buffer/spring) if you’re chasing a specific recoil/cycling feel. Start here: Faxon Suppressors and Faxon Suppressor Mounts.
What warranty applies?▾
All Faxon Firearms products are backed by our Limited Lifetime Warranty.
For full warranty terms, service instructions, and exclusions, please visit:
https://faxonfirearms.com/warranty-privacy-terms/
Is the MPN the same as the SKU for this product?▾
Yes. For this product, the MPN matches the SKU: FXSPT3B105GA9.
All Faxon Firearms products are backed by our Limited Lifetime Warranty.
For full warranty terms, service instructions, and exclusions, please visit:
https://faxonfirearms.com/warranty-privacy-terms/
- ffl-firearm:
- 1
- Caliber:
- .300 BLK
- Rifling Twist Rate:
- 1:8
- Muzzle Thread:
- 5/8x24
