Home / AR Parts / Rosco Manufacturing / Rosco Manufacturing Bloodline AR-15 Barrel 300 AAC Blackout 10.5" Heavy Contour 1:7" Twist Black Nitride
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Rosco Manufacturing Bloodline 10.5" 300 Blackout Heavy Contour 1:7 Nitride Barrel
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.750 Gas Block Size
10.5 Heavy Profile Barrel"
11 Degree Barrel Crown
1:7 Twist Rate
Designed for Suppressed SBR/Pistol Use
Pistol-Length Gas System
Specifications
Caliber
Brand
Model
MPN
BL-105-HB-300BLK-7-P
UPC
181969500128
MSRP
$165
Barrel Length
10.5"
Finish
Nitride
Fits
AR-15 (direct replacement for MK 18 platforms)
Color
Black
Description
The Rosco Manufacturing Bloodline is a 10.5-inch AR-15 barrel chambered in 300 Blackout, built as a heavy contour replacement for MK 18 style upper receivers. It is intended for SBR and pistol builds that run a suppressor, and the raw listing notes it can also suit carbines that need a longer rail for accessories such as PEQ-15 units, D-BAL series devices, or laser aiming modules.
The barrel is made from 4150 CMV steel with a nitride finish on the barrel and extension, a black coating, and a 5/8-24 thread pitch at the muzzle. It features an 11-degree crown. All NFA rules apply to short-barreled configurations.
- Caliber: 300 Blackout
- Barrel Length: 10.5 inches
- Contour: Heavy
- Rifling Twist: 1:7
- Material: 4150 CMV
- Finish: Nitride
- Thread Pitch: 5/8-24
- Platform: AR-15 (MK 18 replacement)