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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.
Based on build data

Bravo Company Mfg Upper Receiver Assembly w/ Laser T-Markings, Hard Coated Anodized - 4-UR-M4

Yankee Hill Machine Co., Inc. Ar-15 Gas Tube Black Carbine

Aero Precision Ar-15 Breach Charging Handle Ambidextrous Small Levers

Bravo Company Ar-15/m16 Bcm Mil-Spec 6 Position Receiver Extension

Wilson Combat Ar-15 Lo-Profile Gas Block .750" Black

Bravo Company M16 Bolt Carrier Group Black
Aggregated and anonymized data showing how builders use this product
| Product | Category | Times Built Together |
|---|---|---|
| Bravo Company Mfg Upper Receiver Assembly w/ Laser T-Markings, Hard Coated Anodized - 4-UR-M4 | 6 | |
| Yankee Hill Machine Co., Inc. Ar-15 Gas Tube Black Carbine | 6 | |
| Aero Precision Ar-15 Breach Charging Handle Ambidextrous Small Levers | 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 | |
| Bravo Company M16 Bolt Carrier Group Black | 4 |
| Platform | Percentage |
|---|---|
| AR-15 | 66.7% |
| AR-10 | 33.3% |
| Caliber | Percentage |
|---|---|
| 5.56 NATO | 100% |
| Gas System | Percentage |
|---|---|
| Carbine | 100% |
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