FAXON Firearms AR-15 Gunner Barrel, 18", 5.56 NATO, Rifle Length, 4150 QPQ
All Faxon Firearms barrels
Click to see full view
Faxon Firearms
Overview
The Faxon Firearms AR-15 Gunner Barrel is an 18-inch pencil profile barrel designed for the 5.56 NATO caliber, offering a lightweight option for your build. With a rifle-length gas system and a twist rate of 1:8, this barrel is optimized for stability and accuracy, making it suitable for a variety of ammunition types. You’ll commonly find this barrel in builds that prioritize lightweight configurations while maintaining reliable cycling and performance in 5.56 NATO setups.
Specifications
FAXON Firearms AR-15 Gunner Barrel, 18", 5.56 NATO, Rifle Length, 4150 QPQ
Available Merchants(6)
Prices checked
Price Alert
Build history on GunPartPicker
Availability is good: it was in stock at one retailer or another nearly every time we checked in October 2026, and today all 6 retailers we track have it in stock. Prices barely moved in October 2026, holding around $174, with no real sale all month. Buying today, the lowest price is $152.49 at AT3 Tactical, which matches the best price we saw in October.
Prices checked · refreshed daily across 37 retailers
Not sure which barrel to pick?
We ranked every barrel by how often it shows up in real builds on GunPartPicker.
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 builds that include this one
Yankee Hill Machine .223 Rem/5.56 Flat Top Stripped Upper Receiver, Hardcoat Anodized Matte Black - 110
Aero Precision Stripped M4E1 AR-15 Lower Receiver - Special Edition - Freedom
Battle Arms Development Rack Ambidextrous AR-15 Charging Handle - Mod C
Cryptic Coatings 5.56 NATO AR-15 Bolt Carrier Group - Mystic Bronze
Yankee Hill Machine Co. AR-15 Gas Tube Black Rifle
Bravo Company Pnt Trigger
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
PlatformBased on real build data showing which platform (AR-15, AR-10, AR-9) builders pair with this product.
Builds Featuring This Part
See all builds →Builds in the community that include the Faxon Firearms Ar-15 Gunner Barrel, 18", 5.56 Nato, Rifle Length, 4150 Qpq
| Build | Parts | Total |
|---|---|---|
 | 16 | $1826.70 |
 | 10 | $907.14 |
 | 17 | $1472.22 |
 | 19 | $1460.98 |
No reviews yet. Be the first to review this product!