The Rosco Manufacturing Stray Dog 16-inch SOCOM 5.56 NATO barrel (brand part no. CL-16.25-556-7-M) is a mid-length, phosphate-coated barrel with a chrome-lined bore, made for AR-15 builders who want the classic mil-spec combination. Rosco Manufacturing gives it the same features as its Bloodline 16-inch USASOC barrel, with a 5.56 NATO chamber and mid-length gas, but swaps the modern coating for time-tested phosphate. It is cut from 4150 chrome moly vanadium steel with a 1:7 twist and an 11-degree crown. Cloners and purists will appreciate a finish that looks and wears like an issue barrel. A 1/2×28 threaded muzzle takes a standard muzzle device.

Key Specifications

• The chamber is 5.56 NATO, so the barrel is built around the military cartridge rather than a .223 Remington-only chamber.
• Barrel length is 16 inches, a carbine-class length that keeps the rifle handy.
• The profile is SOCOM, a heavier contour than a pencil barrel that holds up better through extended strings of fire.
• Gas system length is mid-length, which pairs with a mid-length gas tube and handguard.
• Rate of twist is 1:7, a fast twist that stabilizes a wide range of bullet weights.
• The barrel is made from 4150 chrome moly vanadium steel, the standard material for military-pattern AR barrels.
• The barrel and barrel extension are finished in phosphate, the classic mil-spec coating that resists corrosion and glare.
• The bore is chrome lined, which protects against corrosion and makes cleaning easier.
• The muzzle is threaded 1/2×28, the common AR thread pitch for flash hiders and brakes.
• The gas block seat is sized for a .750-inch gas block, so a standard low-profile or clamp-on block will fit.

Frequently Asked Questions

Is the bore chrome lined? Yes. Rosco gives the Stray Dog a chrome-lined bore under a phosphate coating on the barrel and extension.

What gas system and gas block size does it use? It uses a mid-length gas system and a .750-inch gas block diameter.

What thread does the muzzle have? The muzzle is threaded 1/2×28, so any standard 1/2×28 muzzle device will mount directly.

Buy the Rosco Manufacturing Stray Dog 16-Inch SOCOM 5.56 NATO Mid-Length Barrel, Phosphate and Chrome Lined

Phosphate and chrome lining give the Stray Dog a no-nonsense finish for a clone build or a duty-style carbine, and the SOCOM profile adds some staying power. Order it from our Lubbock, Texas gun shop for fast, insured shipping, and browse more AR barrels while you are here.