Rifling picture is of the throat.

Has been dimpled to accept set screw style gas blocks.

Faxon Integral® Series 16" Pencil A2 Profile — Mid-Length 5.56 NATO (1:8 Twist)
Ultra-lightweight Pencil barrel with an integral slim A2-style flash hider for a legal 16" OAL — no pin & weld required.

The Faxon Integral® Series 16" Pencil A2 5.56 NATO barrel delivers the maneuverability of a 14.5" barrel and the legal compliance of a 16" overall length — without any pin-and-weld work. Its integrally machined slim flash hider keeps weight to a minimum and preserves excellent flash reduction while maintaining perfect concentricity.

Built in-house from 4150 CMV steel and finished in black nitride, the Pencil profile shifts weight rearward for outstanding handling. Full-service QC — stress relieved, air-gauge tested, MPI-inspected, and headspace verified — ensures the accuracy and reliability Faxon is known for.

Key Benefits
Integral slim A2 flash hider: Machined as part of the barrel for perfect alignment and a clean, lightweight front end.
16" legal OAL: 14.5" rifled section extended by the integral device — compliant without pin & weld.
Pencil profile: Faxon’s lightest contour for superior balance and quick target transitions.
Mid-length gas system: Smooth recoil impulse and reliable cycling across common 5.56 loads.
Durable construction: 4150 CMV steel with nitride finish inside and out for wear and corrosion resistance.
Precision QC: Each barrel is MPI-inspected and headspace checked for dependable performance.

Specifications
Caliber: 5.56 NATO
Rifled Length: 14.5" rifled, 16" overall length with integral flash hider
Profile: Pencil
Muzzle Device: Integral Slim A2-Style Flash Hider
Material: 4150 CMV Steel
Rifling: Button-Rifled, 1:8 Twist
Finish: Salt Bath Nitride (inside & out)
Gas System: Mid-Length
Gas Block Diameter: .625"
Gas Block Journal Length: 1.1"
Barrel Extension: M4
Weight: 1.19 lb (approx.)
Crown: 11° Target Crown

Pick up preferred in Wayland MI. Cash only, no pay apps. More pictures available if needed.