Faxon Firearms Duty Series AR-15 5.56 NATO 16" Pencil Barrel - QPQ Black Nitride

The Faxon Firearms Duty Series 16" Pencil profile barrel is a precision-built replacement barrel chambered in 5.56x45mm NATO and engineered for AR-15 and M16 pattern rifles. Machined from 4150 CMV steel and finished in QPQ black nitride, this slim-profile barrel reduces front-end weight without sacrificing the durability and accuracy Faxon is known for.

The button-rifled bore is cut to produce uniform lands and grooves for consistent shot-to-shot accuracy, and each barrel is individually checked for headspace on precision custom hardened gauges. The 16-inch length pairs with a 1:8" twist rate that stabilizes the full spectrum of 5.56 bullet weights, from lighter varmint loads through heavier match projectiles, while the target crown protects the muzzle and helps preserve accuracy round after round.

Sized for an under-handguard mid-length gas system and chambered to safely run both 5.56 NATO and .223 Remington ammunition, this Pencil barrel is an excellent choice for duty carbines, lightweight general-purpose builds, and refreshing an existing AR-15 or M16 platform. Backed by Faxon's reputation for concentricity, fit, and finish.