P
prestonHandsome10/10
Reviewed on May 16, 2026Verified with Build
shoots flat
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FAXON Firearms AR-15 Gunner Barrel, 16", 5.56 NATO, Mid-Length, 4150 QPQ
2 options
- Standard, this page
- FDEout of stock
Click to see full view
Faxon Firearms
Overview
The Faxon Firearms AR-15 Gunner Barrel is a 16-inch pencil-profile barrel designed for the 5.56 NATO caliber, making it a lightweight option for builders looking to maintain maneuverability without sacrificing performance. With a mid-length gas system and a 1:8 twist rate, this barrel optimizes reliability and accuracy, ensuring effective cycling and stability for a variety of bullet weights. This barrel is commonly found in builds that prioritize a balance of lightweight construction and reliable function in 5.56 NATO configurations.
Specifications
MPN15A58M16NGQ
Gas System LengthMid-Length
CoatingNitride
Twist Rate1:8
Barrel ProfileM4
Barrel Length16
Caliber5.56 NATO
Thread Pitch1/2x28
FinishBlack
Gas Block Diameter.625
FAXON Firearms AR-15 Gunner Barrel, 16", 5.56 NATO, Mid-Length, 4150 QPQ
2 options
- Standard, this page
- FDEout of stock
August 2026 on GunPartPicker
FAXON Firearms AR-15 Gunner Barrel, 16", 5.56 NATO, Mid-Length, 4150 QPQ ranked #20 of the 298 barrels builders added on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since January 2026. All time, it ranks #24 of the 763 barrels builders have added. Builds with this barrel are nearly all chambered in 5.56 NATO, nearly all on mid-length gas, and nearly all AR-15.
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today all 11 retailers we track have it in stock. It dipped to $146 at GritR Sports for a stretch in August 2026, under its usual $161.49 to $170.20, so sales do come around. Buying today, the lowest price is $134.33 at Sportsmans Outdoor Superstore, which matches the best price we saw in August.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
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Read the guide: AR-15 Barrel Length & Brand Report →Check it against the live catalog:
Frequently Built With
The part most often added in each category by the 25 builds that include this one
PSA AR-15 Built Stealth Upper Receiver - No T Marks - 516444539
Upper Receiver$100 · out of stockin 5 builds
PSA AR-15 "Stealth" Stripped Lower Receiver
Lower Receiver$80in 4 builds
Wilson Combat AR-15 M-LOK Handguard - Black - 15"
Handguard$109in 4 builds
Wilson Combat Charging Handle AR15 Mil-Spec
Charging Handle$31in 3 builds
M16 Bolt Carrier Group 5.56X45mm NATO Full Chrome
Bolt Carrier Group$117in 3 builds
KAK Industry Low Profile Gas Block .750 Steel Phosphate Finish Black
Gas Block$19in 3 builds
Builds Featuring This Part
See all 8 →Builds in the community that include the Faxon Firearms Ar-15 Gunner Barrel, 16", 5.56 Nato, Mid-Length, 4150 Qpq
| Build | Parts | Total |
|---|---|---|
 | 19 | $1144.07 |
 | 26 | $1746.84 |
 | 9 | $462.89 |
 | 28 | $2089.27 |
 | 12 | $1269.26 |
 | 20 | $944.54 |
 | 19 | $1475.64 |
| 21 | $1126.85 |
Customer reviews
5.0out of 5
2 global ratings
Top reviews
J
joshs25661814Faxon Gunner 16 mid clean
Reviewed on May 1, 2026Verified with Build
Faxon Gunner 16 inch barrel in 4150 chrome moly with QPQ is the budget end of their lineup but quality is solid. Chamber gauges clean. Mid length gas system runs smooth with M193 ball ammo. QPQ finish is holding up after 600 rounds without showing wear on the muzzle threading.
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