BALLISTIC BBL 5.56 16″ HBAR MID CHR

Description

Ballistic Advantage’s Modern Series HBAR Mid-Length barrel is built for the AR-15 shooter who wants a serious general-purpose rifle — one that handles sustained fire without the vices of a lightweight profile and cycles reliably across a wide range of ammunition. The heavy profile adds mass toward the muzzle, which slows heat buildup during extended strings and stiffens the tube against harmonic flex that can open up groups as a barrel warms.

The mid-length gas system is the meaningful choice here. Compared to a carbine-length system, mid-length ports the gas farther down the barrel, which gives the bullet more time to exit the muzzle before the system cycles. The result is a longer, softer pressure curve — less violence at the bolt carrier, reduced felt recoil, and less wear on the action over time. It also moves the gas block farther from the receiver, giving handguard selection more room to breathe.

A 1-in-7 twist rate is cut to stabilize heavy projectiles reliably — bullets in the 62- to 77-grain range seat well here, including M855 and heavier match loads. Shooters running lighter 55-grain ammunition will still function fine, but the twist is optimized for the heavier end of the .223/5.56 spectrum. The bore and chamber are chrome lined, which provides durability against corrosion and erosion and makes cleaning easier after high round counts. The barrel threads 1/2×28 at the muzzle, the standard pattern for .223/5.56 muzzle devices. Material is Chrome Moly Vanadium steel, with a manganese phosphate finish on the exterior.