FAXON DUTY SERIES GUNNER PROFILE 16" CARBINE-LENGTH 300 BLK AR15 BARREL
Faxon
$180.00
(9 reviews)
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Faxon
FAXON DUTY SERIES GUNNER PROFILE 16" CARBINE-LENGTH 300 BLK AR15 BARREL
Faxon Duty Series — 16" Gunner 300 BLK AR-15 Barrel (Carbine-Length Gas)
4150 CMV • Button Rifled • Gunner Profile • Nitride Inside & Out • MPI & Headspace Checked
The Faxon Duty Series 16" Gunner 300 BLK is the ideal balance of strength, weight, and performance. The Gunner profile combines the durability of a government contour with the agility of a pencil barrel—keeping the rifle balanced and responsive for any application.
Machined from 4150 CMV steel, button rifled with a 1:8 twist, and treated with salt bath nitride inside and out for corrosion resistance and long service life. Every Faxon barrel is stress relieved, air-gauge tested, MPI inspected, and headspace verified for unmatched quality control.
Key Benefits
- Gunner Profile: Combines Gov’t strength with Pencil-like handling for ideal balance.
- Carbine-Length Gas: Tuned for reliable cycling in 300 BLK platforms.
- 4150 CMV Steel: Mil-spec-grade strength and excellent heat resistance.
- Nitride Inside & Out: Improved barrel life, corrosion resistance, and easier cleaning.
- Precision QC: Stress relieved, MPI tested, and headspace checked in-house.
Specifications
Frequently Asked Questions
Will this barrel work with both subsonic and supersonic ammo?
Yes — the 16" Gunner 300 BLK performs well with both load types. Carbine gas offers reliable cycling for most factory ammunition.
What muzzle devices fit this barrel?
Standard 5/8x24 threaded .30-caliber devices—brakes, flash hiders, and most 300 BLK suppressor mounts.
Why choose the Gunner profile?
The Gunner combines the rigidity of a government contour with the lighter front of a pencil barrel, improving balance and handling.
Overview: 16" Duty Series Gunner 300 Blackout Barrel
The Faxon Duty Series 16" Gunner 300 BLK offers a perfect blend of accuracy, durability, and light handling. Built from 4150 CMV and treated with nitride inside and out, this barrel is engineered to perform across subsonic, supersonic, suppressed, and unsuppressed configurations.
Featuring a Gunner profile, 1:8 twist, carbine-length gas system, and 5/8x24 muzzle threads, it’s optimized for modern 300 Blackout builds. Each Faxon barrel is stress relieved, air-gauge tested, MPI inspected, and individually headspace verified to deliver the reliability and precision shooters expect from Faxon Firearms.
- Barrel Material:
- 4150 CMV
- Barrel Type:
- Button Rifled
- Caliber:
- 300 BLK
- Barrel Twist:
- 1:8
- Barrel Length:
- 16"
- Barrel Profile:
- Gunner
- Barrel Gas System:
- Carbine
- Outside Finish:
- QPQ Nitride
- Muzzle Thread:
- 5/8x24
- Gas Block Diameter:
- .750"
- Gas Block Journal Length:
- 1.9"
- Barrel Extension:
- M4
- Barrel Weight:
- 1.48 lbs
- Crown Type:
- Recessed 11-degree Target Crown
Reviews
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16 inch Gunner barrel
Another great barrel for. 300blkout.
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Great barrel
Perfect solution for the current political shenanigans. I do with Faxon offered a version with a mid-length gas system.
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16" GUNNER, 300 BLK, CARBINE-LENGTH, 4150 QPQ, AR-15
This is the third barrel of yours I have of the Gunner profile. I appreciate the accuracy and weight, quick handling, transition target to target it provides. The only improvement that you could add is a dimple for the gas block, other than that it's hard to improve on perfection.
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16in Gunner Barrel
Great barrel with a great price point. My 2nd. Happy
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16" 300blk gunner
So far only put a few rds through it to test function with different loads. Looks good, so far shoots good with standard loads, not so much with sub-sonic loads. Wish Faxon made the same barrel with Pistol length gas! So far I'm happy with it. LOTS lighter than a medium weight barrel!
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16" GUNNER, 300 BLK, Carbine-Length
Purchased with bolt carrier group, very pleased, excellent quality
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300 blackout 16" gunner
Much lighter than the heavy barrel i swapped. It makes my 300 blackout rifle much handier because of the lighter weight. Faxon shipped my barrel extremely fast! I have had it sitting ready to install for several weeks due to time constraints. I cleaned the bore and chamber prior to firing . the chamber seems a little rough per scratched casings. I will dress up the chamber a little more. Barrel seems accurate, though i didn't shoot groups. I just loaded up 5 rounds and popped a sandbar in my pond as it was raining out. Am satified with the accuracy at this time. Will upd8 review when i have a little more time.c
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Barrel
Looks good, no defects or blemishes. Shipping was prompt. Barrel seems to be of high quality. I have not installed or tested it yet but still in the build process. It did fit well with my upper though during test assembly.
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Great Barrel
This is the first barrel I have purchased from Faxon. The barrel itself is very accurate. I was only able to get it sighted in but I would expect even better groups once broken in. I haven't tested the barrel for best group size yet but i had consistant 1" groups for sighting in purposes using a less than ideal rest. Even with that the barrel only took 8 rounds to sight in and punch center. The fit and finish were very good, although the gas port was canted to the right. I'm not sure if that is usual for Faxon barrels or not. Lastly, I had an issue initially. I ordered a .300 Blk barrel but I received a 7.62x39 Russian instead. I contacted customer service the same day and they sent the correct barrel right away. My only complaint is the second barrel was shipped with standard shipping. I would have liked expedited shipping on the second barrel due to the factory sending the incorrect barrel to begin with. At least Faxon paid for the return shipping . So far I'm pleased with the barrel itself, and only expect better results. I will consider another Faxon barrel in the future for another build