Rosco Manufacturing Bloodline 5.56 AR-15 Barrel Government Mid-Length - 16"
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Rosco Manufacturing
Overview
The Rosco Manufacturing Bloodline 5.56 AR-15 Barrel features a 16" M4 profile designed for optimal performance in a mid-length gas system setup. The .750 gas block diameter and 1:7 twist rate provide reliable cycling and improved accuracy, making it an excellent choice for 5.56 NATO calibers. This barrel is commonly found in builds with extended rifle gas systems, ensuring smooth operation and reduced recoil for enhanced shooting experience.
Specifications
Rosco Manufacturing Bloodline 5.56 AR-15 Barrel Government Mid-Length - 16"
September 2026 on GunPartPicker
Rosco Manufacturing Bloodline 5.56 AR-15 Barrel Government Mid-Length - 16" ranked #77 of the 250 barrels builders added on GunPartPicker in September 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #57 of the 821 barrels builders have added. Builds with this barrel are nearly all chambered in 5.56 NATO, nearly all on mid-length gas, and nearly all AR-15.
It was in stock most days in September 2026, and today 6 of the 7 retailers we track have it in stock. It dipped to $127.25 at Optics Planet for a stretch in September 2026, under its usual $134.99 to $140.50, so sales do come around. Buying today, the lowest price is $127.25 at Optics Planet, which matches the best price we saw in September.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
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Frequently Built With
The part most often added in each category by the 10 builds that include this one
Bravo Company Mfg Upper Receiver Assembly w/ Laser T-Markings, Hard Coated Anodized - 4-UR-M4
Wilson Combat AR-15 Lo-Profile Gas Block .750" Black
Aero Precision AR-15 5.56 BCG W/C158 Bolt - Aero Logo - Phosphate
Aero Precision AR-15 Breach Charging Handle Ambidextrous Small Levers
Aero Precision Stripped AR-15 Lower Receiver - Gen 2 - FDE Cerakote
Timber Creek Outdoors Ambidextrous Safety Selector - Black
Builds Featuring This Part
See all 3 →Builds in the community that include the Rosco Manufacturing Bloodline 5.56 Ar-15 Barrel Government Mid-Length - 16"
| Build | Parts | Total |
|---|---|---|
 | 20 | $976.00 |
 | 22 | $1960.87 |
 | 13 | $1010.85 |
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