Faxon Duty Pencil 5.56 NATO 10.5″ 1:8 Nitride

The Faxon Duty Pencil series 10.5″ barrel is chambered for 5.56 NATO (.223 Rem) and finished in black nitride. It uses a pencil contour and is button rifled to provide a balance of light weight and consistent accuracy for short-barrel AR-15 configurations. The barrel is manufactured with in-process inspections, air-gauge testing, and an 11-degree target crown to support repeatable muzzle alignment. This configuration ships with 1/2-28 muzzle threads and is set up for a carbine-length gas system.

Key Specifications

• Chambering is 5.56 NATO (.223 Rem).
• The barrel length is 10.5 inches.
• The twist rate is 1:8.
• The finish is black nitride.
• The contour is a pencil profile for reduced weight.
• The rifling method is button rifled.
• The gas system length is carbine.
• The muzzle threads are 1/2-28.
• The barrel includes a 11-degree target crown to support consistent accuracy.
• The listed weight is 0.9 lb.

Designed for compact AR-15 builds where low weight and reliable function matter, this Faxon Duty Pencil barrel provides the core features expected in short-barrel applications: controlled harmonics from a slim contour, a standard 1:8 twist for a wide range of projectiles, and a durable nitride finish. Its combination of manufacturing controls and serviceable specification makes it a capable choice for duty-style, compact, and carbine-length systems where consistent performance is required.