Lead & Steel LS556PEN-MID 5.56mm 13.9" Pencil Profile Mid-Length Barrel

The Lead & Steel LS556PEN-MID-13.9 is a precision-made AR-15 barrel chambered in 5.56mm, designed for builders who want a light, fast-handling pencil profile on a mid-length gas platform. With a 13.9" barrel length and a 1:7 twist rate, this barrel delivers the slim, lightweight feel of a classic pencil-profile tube while supporting the broad 5.56mm bullet-weight range favored by AR-15 shooters.

The blank is machined from 4150 Chrome Moly Vanadium Steel and finished with a wear-resistant QPQ Black Nitride treatment, giving the bore and exterior excellent corrosion resistance and long service life. The pencil profile keeps the front end light and agile, while M4 feed ramps ensure reliable feeding with standard bolt carrier groups. The barrel is configured for a mid-length gas system, providing a smoother recoil impulse than carbine-length setups on shorter barrels.

This is a drop-in barrel for the AR-15 platform chambered for standard 5.56 ammunition. The light pencil profile and mid-length gas setup make it well suited to lightweight rifle builds and custom AR-15 projects where balance and handling matter. This listing is for the barrel only - no handguard, gas block, or muzzle device is included.