Rosco Mfg Cl-16.25-556-7-M Stray Dog 5.56 Nato 16" Phosphate 4150 Cmv Brl

The Rosco Manufacturing Stray Dog 5.56 NATO barrel is a rugged, no-frills replacement or build barrel designed for shooters who want dependable performance without the premium price tag. This 16-inch barrel is chambered in 5.56 NATO and constructed from 4150 CMV steel with a black phosphate finish—a time-tested combination that delivers corrosion resistance and durability in the field, at the range, or in storage. Whether you're assembling an AR-15 upper, swapping out a worn barrel, or building a truck gun, this Rosco offering gives you honest quality from a manufacturer known for no-nonsense American-made barrels.

The 4150 CMV (chrome-moly-vanadium) steel and phosphate coating are the workhorse standard for modern rifle barrels—proven in military and civilian use for decades. The 16-inch length strikes a practical balance for intermediate-range shooting, hunting, and close-quarters applications, while remaining compact enough for maneuverable handling. The "Stray Dog" line is Rosco's honest-value proposition: solid barrel metallurgy and finishing without the boutique markup.

If you're replacing a barrel on an existing upper receiver or building an AR from the ground up, verify your upper receiver's compatibility and ensure the barrel extension matches your bolt carrier group before ordering. This is a barrel only—it ships without gas tube, gas block, handguard, or other components.

Key Features

• 16-inch barrel length for practical, balanced handling across hunting, home defense, and range use
• 5.56 NATO chamber and proven 4150 CMV steel construction
• Black phosphate finish resists rust and corrosion in field conditions
• Direct replacement fit for standard AR-15 upper receivers with matching barrel extension

Specifications

Frequently Asked Questions

Will this barrel fit my AR-15 upper receiver?

This barrel is designed for standard AR-15 uppers with a compatible barrel extension. Verify that your upper receiver and bolt carrier group match the barrel extension type before installation.

What's included with the barrel?

This is a barrel only. Gas tube, gas block, handguard, muzzle device, and other components are sold separately.

Why choose phosphate over other finishes?

Black phosphate is a proven, time-tested finish that provides solid corrosion resistance without extra cost. It's the standard on millions of AR barrels and holds up well to normal field use and cleaning.

What's the difference between the Stray Dog line and Rosco's premium barrels?

The Stray Dog line delivers honest 4150 CMV steel and phosphate quality at a lower price point—no exotic treatments or boutique features, just the core metallurgy and finish that work.