The Radical Firearms 16-inch Barrel (brand part number B16CV556SOC-M-17) is a mid-length gas system barrel chambered in 5.56 NATO/.223 Remington, built by Radical Firearms for AR-15 owners assembling or upgrading a standard-length rifle build. At 16 inches, it clears the federal minimum rifle barrel length with room to spare, and its 1:7 twist rate is suited to stabilizing a wide range of 5.56 bullet weights, including heavier 62- to 77-grain loads.

Key Specifications

• Chambered for 5.56 NATO/.223 Remington.
• Measures 16 inches, clearing the federal minimum rifle barrel length.
• Uses a mid-length gas system, suited to a standard-profile AR-15 build.
• Rifled with a 1:7 twist rate, stabilizing a wide range of bullet weights including heavier 62- to 77-grain loads.

Frequently Asked Questions

Does this barrel require any special paperwork to buy? No, at 16 inches it clears the federal minimum rifle barrel length, so it’s an ordinary Title I AR-15 part.

What bullet weights does the 1:7 twist stabilize best? A 1:7 twist is on the faster end of common AR-15 twist rates, generally best suited to heavier 5.56 bullets in the 62- to 77-grain range, though it handles lighter loads as well.

Buy the Radical Firearms 16in Mid-Length 5.56 Barrel, 1:7 Twist

Our Lubbock, Texas team will get this barrel ready to ship as soon as it’s ready. Reserve the Radical Firearms 16-inch Mid-Length Barrel now and complete your AR-15 barrel build.