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orkaydk299best buy yet
Reviewed on February 15, 2026Verified with Build
accuracy is great
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Rosco Manufacturing Bloodline 5.56 Ar-15 Barrel Government Carbine - 11.5"
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Rosco Manufacturing
Overview
The Rosco Manufacturing Bloodline 5.56 AR-15 Barrel is an 11.5" M4 profile barrel designed for optimal performance with 5.56 NATO ammunition. Its carbine-length gas system ensures reliable cycling and function, while the 1:7 twist rate stabilizes a wide range of bullet weights, making it suitable for various applications. This barrel is commonly found in builds focused on compact configurations, particularly those intended for close-quarters engagements.
Specifications
MPNBL-115-M4-556-7-C
Thread Pitch1/2x28
PlatformAR-15
ColorBlack
Action TypeSemi-Auto
ComplianceStandard
Barrel Length11.5
Gas System LengthCarbine
Barrel ProfileM4
Caliber5.56 NATO
Twist Rate1:7
CoatingQPQ/Nitride
Gas Block Diameter.750
Rosco Manufacturing Bloodline 5.56 Ar-15 Barrel Government Carbine - 11.5"
Frequently Built With
Based on build data
Yankee Hill Machine Co., Inc. Ar-15 Gas Tube Black Carbine
Bravo Company Mfg Upper Receiver Assembly w/ Laser T-Markings, Hard Coated Anodized - 4-UR-M4
Aero Precision Ar-15 Breach Charging Handle Ambidextrous Small Levers
Bravo Company M16 Bolt Carrier Group Black
Bravo Company Ar-15/m16 Bcm Mil-Spec 6 Position Receiver Extension
Wilson Combat Ar-15 Lo-Profile Gas Block .750" Black
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
PlatformBased on real build data showing which platform (AR-15, AR-10, AR-9) builders pair with this product.
66.7%
AR-1566.7%
AR-1033.3%
CaliberBased on real build data showing which calibers builders choose alongside this product.
100%
5.56 NATO100%
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
100%
Carbine100%
| Product | Category | Times Built Together |
|---|---|---|
| Yankee Hill Machine Co., Inc. Ar-15 Gas Tube Black Carbine | 6 | |
| Bravo Company Mfg Upper Receiver Assembly w/ Laser T-Markings, Hard Coated Anodized - 4-UR-M4 | 6 | |
| Aero Precision Ar-15 Breach Charging Handle Ambidextrous Small Levers | 5 | |
| Bravo Company M16 Bolt Carrier Group Black | 5 | |
| Bravo Company Ar-15/m16 Bcm Mil-Spec 6 Position Receiver Extension | 5 | |
| Wilson Combat Ar-15 Lo-Profile Gas Block .750" Black | 5 |
| Platform | Percentage |
|---|---|
| AR-15 | 66.7% |
| AR-10 | 33.3% |
| Caliber | Percentage |
|---|---|
| 5.56 NATO | 100% |
| Gas System | Percentage |
|---|---|
| Carbine | 100% |
Builds Featuring This Part
See all 11 →Builds in the community that include the Rosco Manufacturing Bloodline 5.56 Ar-15 Barrel Government Carbine - 11.5"
| Build | Parts | Total |
|---|---|---|
 | 16 | $1329.66 |
 | 23 | $2060.13 |
 | 12 | $5501.36 |
 | 10 | $966.71 |
 | 30 | $2672.56 |
 | 22 | $1005.18 |
 | 9 | $1390.43 |
| 12 | $2243.43 |
 | 10 | $1108.72 |
| 13 | $1093.83 |
 | 9 | $875.42 |
Customer reviews
5.0out of 5
1 global rating