Ballistic Advantage 13.9" 5.56 NATO Government Barrel - BABL556035M

Ballistic Advantage 13.9″ 5.56 NATO Government Barrel

Compact precision with enhanced durability.

The Ballistic Advantage 13.9″ 5.56 NATO Government Barrel is purpose-built for durability, balance, and consistent performance in demanding setups. Machined from 4150 Chrome Moly Vanadium steel and finished with a QPQ (Quench Polish Quench) corrosion-resistant treatment, this barrel delivers smooth operation, superior wear resistance, and enhanced longevity.

Its government profile provides a strong blend of rigidity and manageable weight, while the mid-length gas system promotes smoother cycling and reduced recoil impulse. The M4 feed ramp extension, also QPQ-treated, ensures reliable feeding under all conditions. With 1:7 twist rifling, it stabilizes a broad range of 5.56 bullet weights—ideal for tactical, defensive, or range-ready builds.

This barrel is perfect for pin-and-weld configurations when paired with a suitable muzzle device to meet the legal 16″ minimum length.

Features

• 4150 CrMoV Steel – Heat and pressure-resistant construction
• QPQ Nitride Finish – Corrosion-resistant and low-maintenance
• Mid-Length Gas System – Reliable cycling and reduced recoil
• Government Profile – Balanced weight and rigidity
• 1:7 Twist Rate – Optimized for 55–77gr bullets
• Threaded 1/2×28 Muzzle – Ready for brakes, comps, or suppressors
• M4 Feed Ramps – Enhanced feeding reliability

Specifications

• Caliber: 5.56 NATO
• Length: 13.9″
• Material: 4150 CrMoV Steel
• Finish: QPQ / Black Nitride
• Profile: Government
• Gas System: Mid-Length
• Gas Block Journal: 0.750″
• Twist Rate: 1:7 RH
• Thread Pitch: 1/2×28
• Weight: 26 oz
• Platform: AR-15
• Made in the USA

Compliance Note:
All NFA/ATF rules apply. Must be used with a registered SBR, pistol lower, or a permanently attached muzzle device that brings OAL to 16” or more.