Profile Duty 5.56 NATO 20" 1-8 Twist Gunner Contour Bbl BLK Nitride
$176.00 at OpticsPlanet · 8 stores
In stock Sale
Faxon Firearms Gunner AR-15 5.56 NATO Rifle Lenth Barrel 4150 QPQ - 18
No ratings yetBest price
$174.00at OpticsPlanet
In stock Sale checked Oct 21, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| OpticsPlanet Best price | $174.00Salechecked Oct 21, 2026 | In stock | Buy at OpticsPlanet | |
| MidwayUSA | $174.00checked Oct 21, 2026 | In stock | Buy at MidwayUSA | |
| GunMag Warehouse | $174.99checked Oct 21, 2026 | In stock | Buy at GunMag Warehouse | |
| Brownells | $179.40checked Oct 21, 2026 | In stock | Buy at Brownells | |
| Ammunition Depot | $179.40checked Oct 21, 2026 | In stock | Buy at Ammunition Depot | |
| Battlehawk Armory | $146.46Salechecked Oct 21, 2026 | Check store | Buy at Battlehawk Armory | |
| Palmetto State Armory | $179.99Salechecked Oct 21, 2026 | Check store | Buy at Palmetto State Armory | |
| Faxon Firearms | $185.00checked Oct 21, 2026 | Check store | Buy at Faxon Firearms | |
| Rainier Arms | Check priceprice on the store's site | Check store | Buy at Rainier Arms |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
Price history
Lowest in-stock price in the last 30 days: $151.38 at OpticsPlanet. Dashed line = out of stock. Tracking since Sep 27, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Ammunition Depot | $179.40 | $179.40 | $179.40 |
| Battlehawk Armory | $146.46 | $143.00 | $146.46 |
| Brownells | $179.40 | $179.40 | $179.40 |
| Faxon Firearms | $185.00 | $185.00 | $185.00 |
| GunMag Warehouse | $174.99 | $174.99 | $174.99 |
| MidwayUSA | $174.00 | $174.00 | $174.00 |
| OpticsPlanet | $174.00 | $151.38 | $174.00 |
| Palmetto State Armory | $179.99 | $179.99 | $179.99 |
Since Sep 27, 2026.
About this part
The Faxon Firearms Gunner AR-15 5.56 NATO Rifle Lenth Barrel 4150 QPQ - 18 is an 18" 5.56 / .223 barrel from Faxon Firearms with a rifle gas system. It's sold by 8 stores (5 in stock), from $146.46 to $185.00. The lowest in-stock price in the last 30 days was $151.38 at OpticsPlanet.
Fits and works with
- Caliber
- 5.56 / .223 · Shop matching ammo
- Bolt
- Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
- Gas system
- Rifle · Handguards
- Barrel length
- 18" · Handguards
Specifications
- Manufacturer
- Faxon Firearms
- Platform
- AR-15
- Caliber
- 5.56 mm NATO
- Gas system
- Rifle
- Barrel length
- 18"
- Finish
- Black
From the manufacturer
The GUNNER (all caps, as it is that awesome) is the pinnacle of performance, weight, balance, and value. Designed by our competition shooting staff for those who value performance and versatility, the GUNNER profile is a blend of two of the best performing profiles of all time, Gov't and Pencil.
Proving that every once and awhile, the Government can do something right, the GUNNER's profile from the extension to the gas block mimics that delicious taper. From there, common sense takes over and the GUNNER moves to a .625" gas block journal and our famed pencil profile out front.
Removing the weight from the front of the barrel ensures maximum versatility and keeps material to the rear to maximize heat resistance and mitigate whip.
The GUNNER is for real gunners.
All barrels are manufactured under our ISO:9001 and AS:9100 (pending) quality certifications. We inspect each barrel over 15 times before it ever reaches you.
Barrel Material: 4150
Barrel Type: Button Rifled
Barrel Caliber: 5.56 NATO
Barrel Twist: 1:8
Barrel Length: 18"
Barrel Profile: GUNNER Light Hybrid
Barrel Gas System: Rifle Length
Inside Finish: QPQ Nitride
Outside Finish: QPQ Nitride
Muzzle Thread: 1/2-28 TPI (Threads Per Inch)
Gas Block Diameter: .625"
Gas Port Diameter: .093"
Gas Block Journal Length: 1.9"
Barrel Extension: M4
Weight: 1.44 lbs
Magnetic Particle Inspected!
11-degree Target Crown
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Faxon Firearms AR-15 5.56 NATO Pencil Barrel QPQ - 16
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