Ballistic Advantage Modern Series 13.7in 5.56 NATO 1:7

Description

The Ballistic Advantage Modern Series 13.7-inch barrel is chambered for .223 Rem/5.56 NATO and built for reliable service in mid-length AR platforms. It is machined from CrMoV steel and finished with a QPQ corrosion resistant treatment. The barrel uses a Government profile and is fitted with a QPQ-coated M4 feed ramp extension for additional surface durability.

Key Specifications

• The chambering is .223 Rem/5.56 NATO.
• The barrel length is 13.7 inches.
• The barrel uses a Government profile.
• The gas spacing is configured as a mid-length gas system.
• The rifling is cut to a 1:7 twist rate.
• The barrel is machined from CrMoV steel.
• The external finish is a QPQ corrosion resistant coating.
• The M4 feed ramp extension is QPQ-coated for added durability.
• The exterior color is Black.
• Designed for use with a gas block.

Whether you’re assembling a balanced mid-length AR for range work, precision-oriented builds, or general-purpose use, this Modern Series barrel pairs durable materials and protective coatings with a modern twist rate and gas spacing. Its Government profile and mid-length configuration offer a practical balance of weight and gas impulse, while the QPQ treatments help resist wear and corrosion over time. This barrel is a straightforward, well-specified option for shooters who prioritize durable construction and consistent performance in a compact package.