Faxon Firearms AR-15 5.56 NATO Pencil Barrel QPQ - 10.5
$151.80 at Ammunition Depot · 12 stores
In stock
Best price
$151.80at Brownells
In stock Lowest in 30 dayschecked Nov 13, 2026
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
- Mid-length · Handguards
- Muzzle thread
- 1/2x28 · Muzzle devices
- Barrel length
- 11.5" · Handguards
Specifications
- Manufacturer
- Faxon Firearms
- Color
- Black
- Platform
- AR-15
- Caliber
- 5.56 mm NATO
- Barrel length
- 11.5"
- Twist rate
- 1:8
- Thread pattern
- ½ x 28
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| Brownells Best price 17.76% off · ends Nov 15 · exclusions apply | $151.80checked Nov 13, 2026 | In stock | Buy at Brownells | |
| Ammunition Depot | $151.80checked Nov 7, 2026 | In stock | Buy at Ammunition Depot | |
| OpticsPlanet | $160.00Salechecked Nov 12, 2026 | In stock | Buy at OpticsPlanet | |
| Battlehawk Armory | $141.43Salechecked Nov 10, 2026 | Check store | Buy at Battlehawk Armory | |
| GrabAGun | $151.80Salechecked Nov 12, 2026 | Check store | Buy at GrabAGun | |
| Faxon Firearms | $159.00checked Nov 13, 2026 | Check store | Buy at Faxon Firearms | |
| AR15Discounts 5% off | $160.00checked Nov 12, 2026 | Check store | Buy at AR15Discounts | |
| Dirty Bird | $160.00checked Nov 12, 2026 | Check store | Buy at Dirty Bird | |
| Classic Firearms | $160.00checked Nov 12, 2026 | Check store | Buy at Classic Firearms | |
| Palmetto State Armory | $160.99checked Nov 5, 2026 | Check store | Buy at Palmetto State Armory | |
| MidwayUSA | $160.00checked Nov 13, 2026 | Out of stock | Buy at MidwayUSA | |
| GunMag Warehouse | $160.99checked Oct 11, 2026 | Out of stock | Buy at GunMag Warehouse |
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: $151.80 at Ammunition Depot. Dashed line = out of stock. Tracking since Sep 27, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| AR15Discounts | $160.00 | $119.95 | $160.00 |
| Ammunition Depot | — | $151.80 | $160.00 |
| Battlehawk Armory | $141.43 | $130.89 | $141.43 |
| Brownells | $151.80 | $151.80 | $151.80 |
| Classic Firearms | $160.00 | $160.00 | $160.00 |
| Dirty Bird | $160.00 | $160.00 | $160.00 |
| Faxon Firearms | $159.00 | $159.00 | $159.00 |
| GrabAGun | $151.80 | $151.80 | $151.80 |
| GunMag Warehouse | — | $160.99 | $160.99 |
| MidwayUSA | $160.00 | $160.00 | $160.00 |
| OpticsPlanet | $160.00 | $144.00 | $160.00 |
| Palmetto State Armory | — | $151.99 | $160.99 |
Since Sep 27, 2026.
About this part
The 11.5" Big Gunner 5.56 NATO Mid-Length is an 11.5" 5.56 / .223 barrel from Faxon Firearms with a mid-length gas system. It's sold by 12 stores (3 in stock), from $141.43 to $160.99. The lowest in-stock price in the last 30 days was $151.80 at Ammunition Depot.
From the manufacturer
Designed for those looking to save weight while still allowing for the use of a suppressor long-term, the BIG Gunner is ideal for suppressed shooters. All for just about a single pound!
Behind the gas block will be a Government profile tapering to a shoulder and 1.1" journal .625 gas block. In front of the gas block, the barrel will continue straight to a 1/2x28 muzzle with full shoulder.
Manufactured 100% in-house from cradle-to-grave, these barrels are fully stress relieved, air-gauge tested, and 11 degree target crowned to ensure superior accuracy.
Quality is imbued into these barrels from the start. Starting with top quality, certified 4150 Mil-Spec steel each barrel goes through a battery of tests at each operation until finished in Nitride and final inspected. All barrels are individually checked for headspace by precision custom hardened gauges.
Faxon manufactures all their barrels in Cincinnati, Ohio under ISO:9001 and AS:9100 quality certifications.
- Barrel Material: 4150 GBQ Steel
- Barrel Type: Button Rifled
- Barrel Caliber: 5.56 NATO*
- Barrel Twist: 1:8
- Barrel Length: 11.5"
- Barrel Profile: BIG Gunner Hybrid
- Barrel Gas System: Mid**
- Inside Finish: QPQ Nitride
- Outside Finish: QPQ Nitride
- Muzzle Thread: 1/2-28 TPI (Threads Per Inch
- Gas Block Diameter: .625"
- Gas Hole Diameter: .110"
- Barrel Extension: M4
- Weight: ~1 lbs
- Magnetic Particle Inspected!
- 11-degree Target Crown
Due to the short dwell of the barrel, the gas port will be larger than most barrels. Customers are encouraged to use an adjustable gas block for optimum functionality.
Big Book Catalog, Issue:70, Page:018
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