Home / Barrel Parts / Rosco Manufacturing / Rosco Manufacturing Bloodline AR-15 Barrel 5.56x45mm NATO 14.5" M4 Contour 1:7" Twist Black Nitride
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Rosco Manufacturing Bloodline 14.5" 5.56 NATO M4 1:7 Twist Nitride Barrel
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.750 Gas Block Size
11 Degree Barrel Crown
14.5 M4 Profile Barrel"
1:7 Twist Rate
Carbine-Length Gas System
Designed for Modern Carbine Usage
Specifications
Caliber
Brand
Model
MPN
BL-145-M4-556-7-C
UPC
181969500043
MSRP
$180
Barrel Length
14.5"
Finish
Nitride
Fits
AR-15 M4 carbine
Color
Black
Description
The Rosco Manufacturing Bloodline M4 Contour is a 14.5-inch AR-15 barrel chambered in 5.56x45mm NATO, intended for M4-style carbine builds. It is made from 4150 CMV steel with a nitride finish in black and features a 1:7 twist rate and a 1/2-28 thread pitch for attaching a muzzle device or suppressor.
The barrel includes a 11-degree crown and a nitride-finished barrel and extension. The raw retailer text notes that the barrel is also suited to SBR and pistol builds, with gas port and twist choices made for the specific barrel length. Compatibility is with the AR-15 platform only. NFA rules apply to short-barreled configurations.
- Brand: Rosco Manufacturing
- Model: Bloodline M4 Contour
- Caliber: 5.56x45mm NATO
- Barrel Length: 14.5"
- Twist Rate: 1:7
- Thread Pitch: 1/2-28
- Material: 4150 CMV
- Finish: Nitride, black