M4cqb Replacement Barrel Assembly 10.3in
$298.49 at Ammunition Depot · 5 stores
In stock
Best price
$239.99at Brownells
Out of stock checked Oct 22, 2026
In stock now instead
- M4cqb Replacement Barrel Assembly 10.3in $298.49at Ammunition Depot
- Wilson Combat 11.3” 1/7 5.56 NATO Match Grade Barrel, SBR Tacti… $239.99at OpticsPlanet
- Intergal Muzzle Device 5.56 NATO 16" 1-8 Twist Gunner Contour B… $239.20at Brownells
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| Brownells | $239.99checked Oct 22, 2026 | Out of stock | Buy at Brownells |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
Similar barrels in stock
This part is out of stock at every store we track. These similar barrels are in stock, with today's prices.
Wilson Combat 11.3” 1/7 5.56 NATO Match Grade Barrel, SBR Tactical - TR-556SBRCG11RT7
$239.99 at OpticsPlanet · 6 stores
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Intergal Muzzle Device 5.56 NATO 16" 1-8 Twist Gunner Contour Bbl W/Flash Hider
$239.20 at Brownells · 7 stores
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Price history
Dashed line = out of stock. Tracking since Sep 28, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Brownells | $239.99 | $239.99 | $239.99 |
Since Sep 28, 2026.
About this part
The M4cqb Replacement Barrel Stripped 10.3in is a 10.3" 5.56 / .223 barrel from Colt with a carbine gas system. One store lists it, Brownells at $239.99.
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
- Carbine · Handguards
- Barrel length
- 10.3" · Handguards
Specifications
- Manufacturer
- Colt
- Platform
- AR-15
- Caliber
- 5.56 mm NATO
- Gas system
- Carbine
- Barrel length
- 10.3"
- Twist rate
- 1:7
From the manufacturer
Whether you've got an AR-style pistol or a short-barreled rifle that needs a new barrel or a brand-new build that demands a high-quality barrel, Colt's M4CQB OEM barrel is available as a dedicated add-on or replacement component straight from the same line that produces barrels for Colt's factory guns. Each Colt AR-15 M4CQB Barrel features six-groove rifling with a 1:7-inch rate of twist. The barrels include M4-style feed ramps and have a chrome lining that prevents corrosion. Each barrel is set up for a carbine-length gas system and features 1/2""-28 TPI threading at the muzzle. Colt's M4CQB Barrels are available in 10.3-inch lengths and can be had as Mfg: Colt
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