Rosco Mfg Hsk-115-Soc-556-7-C-Cl Husky 5.56 Nato 11.50" Chrome Lined Phosph

The Rosco Manufacturing Husky 5.56 NATO barrel is a precision replacement barrel built for shooters who demand durability and reliability in an AR platform rifle. At 11.5 inches, this short-barrel rifle (SBR) option delivers the compact handling you need for CQB training, home defense, or close-quarters tactical work without sacrificing the ballistic performance of a rifle-caliber platform. Whether you're refreshing an existing upper receiver or building a specialized AR from scratch, this chrome-lined, phosphate-finished barrel brings Rosco's reputation for quality manufacturing to your setup.

Chrome lining protects the bore and chamber from corrosion and extends barrel life, especially important for high-volume shooters or those running suppressed fire. The phosphate finish on the exterior resists rust and wear, keeping your barrel looking and functioning right through hard use in the field. Built from 4150 CMV (chromium-molybdenum-vanadium) steel, this barrel handles the pressures of 5.56 NATO ammunition reliably, whether you're running standard loads or pushing toward the hotter end of the spectrum. The .750" journal diameter (standard AR pattern) ensures compatibility with most modern receivers and handguards.

Rosco barrels are manufactured to exacting tolerances and are popular among builders who understand that a quality barrel is non-negotiable for accuracy and longevity. This Husky model carries that same attention to detail, making it a practical choice for anyone who respects their rifle and intends to shoot it for years to come.

Key Features

• 11.5" length optimized for compact AR builds and close-quarters applications
• Chrome-lined bore and chamber for extended service life and corrosion resistance
• Phosphate exterior finish for durability and wear protection
• 4150 CMV steel construction handles 5.56 NATO pressures reliably
• .750" journal diameter fits standard AR receivers and handguard systems

Specifications

Frequently Asked Questions

Will this barrel fit my AR-15 upper receiver?

Yes, the .750" journal diameter is the standard AR-15 pattern and will fit any modern AR-15 upper receiver. Make sure your handguard is compatible with a 11.5" barrel before purchasing.

What is 4150 CMV steel and why does it matter?

4150 CMV (chromium-molybdenum-vanadium) is a high-strength alloy steel specifically chosen for firearm barrels. It reliably handles the pressures generated by 5.56 NATO ammunition and maintains dimensional stability through thermal cycling and heavy shooting.

Is the bore chrome lined?

Yes. The chrome lining protects the inside of the barrel from rust and corrosion, which extends barrel life and simplifies maintenance, particularly valuable if you run suppressed fire or shoot in wet conditions.

What does the phosphate finish do?

Phosphate is a rust-resistant coating applied to the exterior steel. It protects the barrel from corrosion and surface wear while giving it a matte, professional appearance that matches most modern AR components.