M4cqb Replacement Barrel Assembly 10.3in
$298.49 at Ammunition Depot · 5 stores
In stock
Best price
$319.99at Brownells
Out of stock checked Oct 22, 2026
In stock now instead
- M4cqb Replacement Barrel Assembly 10.3in $298.49at Ammunition Depot
- AR-15 14.5" Bloodline Saucepack 5.56mm $320.40at Ammunition Depot
- K9 12.5" Bloodline Saucepack 5.56mm $322.20at OpticsPlanet
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| Brownells Best price | $319.99checked Oct 22, 2026 | Out of stock | Buy at Brownells | |
| MidwayUSA | $341.99checked Oct 22, 2026 | Out of stock | Buy at MidwayUSA |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
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This part is out of stock at every store we track. These similar barrels are in stock, with today's prices.
AR-15 14.5" Bloodline Saucepack 5.56mm
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In stock
Price history
Lowest in-stock price in the last 30 days: $341.99 at MidwayUSA. Dashed line = out of stock. Tracking since Sep 28, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Brownells | $319.99 | $319.99 | $319.99 |
| MidwayUSA | $341.99 | $341.99 | $341.99 |
Since Sep 28, 2026.
About this part
The M4/M4A1 Replacement Barrel Assembly 14.5in is a 14.5" 5.56 / .223 barrel from Colt with a carbine gas system. It's sold by 2 stores, from $319.99 to $341.99. The lowest in-stock price in the last 30 days was $341.99 at MidwayUSA.
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
- 14.5" · Handguards
Specifications
- Manufacturer
- Colt
- Platform
- AR-15
- Caliber
- 5.56 mm NATO
- Gas system
- Carbine
- Barrel length
- 14.5"
- Twist rate
- 1:7
From the manufacturer
One of the most popular rifle configurations on the market is the M4A1-style AR-15, and these guns are based on the military-contract carbines produced by Colt in the first place. Now, you can get a genuine Colt-produced barrel for your M4A1 carbine clone. Each Colt M4A1 AR-15 Barrel, chambered in 5.56 NATO, 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 M4A1 AR-15 Barrels are available in 14.5-inch lengths and can be had as a stripped barrel, complete wi Mfg: Colt
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