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
Rosco Manufacturing Bloodline 5.56 AR-15 Barrel Government Carbine - 11.5"
Available Merchants(9)
Prices checked
Price Alert
October 2026 on GunPartPicker
Rosco Manufacturing Bloodline 5.56 AR-15 Barrel Government Carbine - 11.5" ranked #131 of the 329 barrels builders added on GunPartPicker in October 2026. Builders have added it to their builds on GunPartPicker. Since April 2026, it ranks #75 of the 1,045 barrels builders have added. Builds with this barrel are nearly all chambered in 5.56 NATO, nearly all on carbine-length gas, and nearly all AR-15.
It was in stock most times we checked in October 2026, but today only Primary Arms has it in stock. Buying today, the lowest price is $150.30 at Primary Arms, above October's low of $122.49, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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Read the guide: AR-15 Barrel Length & Brand Report →Check it against the live catalog:
Frequently Built With
The part most often added in each category by the builds that include this one
Bravo Company Mfg Upper Receiver Assembly w/ Laser T-Markings, Hard Coated Anodized - 4-UR-M4
Aero Precision AR-15 5.56 BCG W/C158 Bolt - Aero Logo - Phosphate
Aero Precision AR-15 Breach Charging Handle Ambidextrous Small Levers
Midwest Industries 10.5 Lightweight Handguard Black M-LOK
Aero Precision M4E1 Stripped AR-15 Lower Receiver - Black
Wilson Combat AR-15 Lo-Profile Gas Block .750" Black
Builds Featuring This Part
See all builds →Builds in the community that include the Rosco Manufacturing Bloodline 5.56 Ar-15 Barrel Government Carbine - 11.5"
| Build | Parts | Total |
|---|---|---|
 | 16 | $1352.93 |
 | 23 | $2000.32 |
 | 12 | $5637.01 |
 | 10 | $1001.43 |
 | 30 | $3928.88 |
 | 22 | $1029.51 |
 | 9 | $1438.24 |
| 12 | $2296.11 |
 | 10 | $1152.61 |
| 13 | $1185.14 |
 | 9 | $984.21 |
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