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Rosco Manufacturing Bl 075 M4 556 7 P Bloodline 5.56 NATO 7.50 Nitride 4150 CMV Barrel

Rosco Manufacturing Rosco Manufacturing Bl 075 M4 556 7 P Bloodline 5.56 NATO 7.50 Nitride 4150 CMV Barrel
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Rosco Manufacturing

Overview

The Rosco Manufacturing BL-075-M4-556-7-P Bloodline barrel is a 5-inch M4 profile barrel designed specifically for 5.56 NATO cartridges, featuring a carbine-length gas system and a 1:7 twist rate. This setup allows for reliable cycling and stabilization of a wide range of bullet weights, making it suitable for both tactical and compact builds. You’ll commonly find this barrel in short-barreled rifles intended for close-quarters engagements.

Specifications

MPNBL-075-M4-556-7-P
Barrel Length5.
Caliber5.56 NATO
Gas System LengthCarbine
Barrel ProfileM4
Twist Rate1:7

Available Merchants(1)

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$134
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Build history on GunPartPicker

Builders on GunPartPicker first added the Rosco Manufacturing Bl 075 M4 556 7 P Bloodline 5.56 NATO 7.50 Nitride 4150 CMV Barrel to a build in April 2026.

Today the one retailer we track is out of stock. Listed prices start at $134.10 at BattleHawk Armory for when it comes back.

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Builds Featuring This Part

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Builds in the community that include the Rosco Manufacturing Bl 075 M4 556 7 P Bloodline 5.56 NATO 7.50 Nitride 4150 Cmv Barrel

BuildPartsTotal
LMT 5" build build
LMT 5" build		15$1369.17

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