Rosco Manufacturing Bloodline 5.56 Ar-15 Barrel Government Carbine - 11.5"

Rosco Manufacturing Bloodline 5.56 Ar-15 Barrel Government Carbine - 11.5" - Barrel for AR-15 - view 1
Rosco Manufacturing Bloodline 5.56 Ar-15 Barrel Government Carbine - 11.5" - Barrel for AR-15 - view 2
Rosco Manufacturing Bloodline 5.56 Ar-15 Barrel Government Carbine - 11.5" - Barrel for AR-15 - view 3
Rosco Manufacturing Bloodline 5.56 Ar-15 Barrel Government Carbine - 11.5" - Barrel for AR-15 - view 4
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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

Available Merchants(8)

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Frequently Built With

Based on build data

Build Configuration Breakdown

Aggregated and anonymized data showing how builders use this product

Platform

66.7%
AR-1566.7%
AR-1033.3%

Caliber

100%
5.56 NATO100%

Gas System

100%
Carbine100%
Frequently Built With Products
ProductCategoryTimes Built Together
Yankee Hill Machine Co., Inc. Ar-15 Gas Tube Black Carbine6
Bravo Company Mfg Upper Receiver Assembly w/ Laser T-Markings, Hard Coated Anodized - 4-UR-M46
Aero Precision Ar-15 Breach Charging Handle Ambidextrous Small Levers5
Bravo Company M16 Bolt Carrier Group Black5
Bravo Company Ar-15/m16 Bcm Mil-Spec 6 Position Receiver Extension5
Wilson Combat Ar-15 Lo-Profile Gas Block .750" Black5
Build Platform Breakdown
PlatformPercentage
AR-1566.7%
AR-1033.3%
Build Caliber Breakdown
CaliberPercentage
5.56 NATO100%
Build Gas System Breakdown
Gas SystemPercentage
Carbine100%

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"

BuildPartsTotal
11.5"
16$1329.66
battle arms 11.5" 5.56
23$2060.13
11.5" Smith & Wesson clone
12$5501.36
Aero precision 11.5" 5.56
10$966.71
for home defense 11.5"
30$2672.56
11.5" build
22$1005.18
Sons of Liberty Gun Works 11.5" build
9$1390.43
LMT 11.5"
12$2243.43
11.5" aero precision pistol
10$1108.72
as a backup 11.5"
13$1093.83
first 5.56 build
9$875.42

Customer reviews

5.0out of 5

1 global rating

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Top reviews

O
orkaydk299
best buy yet
Reviewed on February 15, 2026Verified with Build

accuracy is great

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