Ballistic Advantage Modern Series 5.56 NATO Barrel, 13.9″, Government Profile, 1/2×28 Threaded, QPQ Black, Mid-Length Gas

Description

Ballistic Advantage Modern Series 5.56 Government Barrel – 13.9 Inch

Get into a quality AR-15 barrel without breaking the budget with this 5.56 government barrel from Ballistic Advantage’s Modern Series. At 13.9 inches, this barrel is a popular choice for pin-and-weld builds that meet the 16-inch minimum overall barrel length while keeping the rifle shorter and more maneuverable than a standard 16-inch configuration. The government profile is a proven military contour that has served reliably for decades.

Government Profile Benefits

The government profile on this 5.56 government barrel features a thicker section forward of the gas port, which adds rigidity where heat and pressure are greatest during sustained fire. This makes the barrel well suited for duty use, training classes, and range sessions where round counts climb quickly. The added material at the gas block also provides a stable foundation for mounting accessories and gas blocks without concern for barrel deflection.

4150 CMV Steel and QPQ Finish

Machined from 4150 Chrome Moly Vanadium steel, this 5.56 government barrel delivers the durability and heat resistance that serious shooters demand. The QPQ corrosion-resistant finish hardens both the bore and exterior, extending barrel life and simplifying maintenance. A QPQ coated M4 feed ramp extension ensures reliable chambering across a wide range of ammunition types and weights.

Mid-Length Gas System

The mid-length gas system is the ideal match for 13.9 inches of barrel, producing a smoother recoil impulse and gentler bolt carrier group cycling compared to carbine-length gas on the same barrel length. This translates to faster follow-up shots, less wear on internal components, and a more pleasant shooting experience overall. The .750 gas block journal accommodates standard low-profile gas blocks.

Specifications and Value

With a 1:7 twist rate for stabilizing heavier projectiles and 1/2×28 muzzle threading for standard 5.56 devices, this 5.56 government barrel is a straightforward drop-in upgrade for any AR-15 upper. The Modern Series from Ballistic Advantage delivers proven quality at an accessible price. Free shipping on all orders at Daytona Tactical.