The Ballistic Advantage Modern Series 5.56 NATO AR barrel (brand part number BABL556023M) is an 11.5-inch, government-profile carbine barrel built for AR-15 pistols and SBRs that need reliable function without added weight forward of the receiver. Ballistic Advantage machines it from chrome-moly vanadium steel and applies a QPQ corrosion-resistant finish for long service life. The extension includes a QPQ-coated M4 feed ramp cut for smoother, more reliable feeding under sustained fire. It’s a proven profile for shooters who want a compact 5.56 build that still runs hard.

Key Specifications

• Chambered in .223 Remington/5.56 NATO for standard AR-15 ammunition.
• Measures 11.5 inches, a carbine-length barrel suited to compact builds.
• Cut to a government profile for a lighter, front-balanced build.
• Machined from chrome-moly vanadium (CrMoV) steel for strength and heat resistance.
• Finished with a QPQ corrosion-resistant coating over the barrel and feed ramp extension.
• Features a QPQ-coated M4 feed ramp extension for smoother, more reliable feeding.
• Part of Ballistic Advantage’s Modern Series barrel line.

Frequently Asked Questions

What profile is this barrel cut to? It’s a government profile, which keeps front-end weight down compared to a heavy or bull profile.

Does it include M4 feed ramps? Yes, the extension has QPQ-coated M4 feed ramps for smoother feeding.

What caliber does it run? It’s chambered in .223 Remington/5.56 NATO.

Buy the Ballistic Advantage Modern Series 5.56 NATO 11.5-Inch Government-Profile Carbine Barrel

An 11.5-inch government profile is a proven combination for compact 5.56 pistols and SBRs that still need to run hard through a full magazine. This Ballistic Advantage barrel delivers that balance with a durable QPQ finish. Check out the rest of our AR barrels selection and order from our Lubbock, Texas gun shop — our team will get it moving as soon as it’s ready to ship.