FN America 14" SCAR 16S Barrel Assembly - 5.56mm NATO

FN America 14" SCAR 16S Barrel Assembly - 5.56mm NATO

Transform your FN SCAR® platform into an agile, authentic CQC configuration with the FN America SCAR® 16S 14″ 5.56mm Complete Barrel Assembly. Engineered and manufactured by FN America to the exacting standards of the U.S. military’s Mk 16 SCAR program, this 14-inch barrel assembly delivers the ideal balance between full-power 5.56x45mm NATO ballistic efficiency and rapid, close-quarters handling. Designed as a direct factory replacement or short-barreled rifle (SBR) upgrade, it brings the rifle's center of gravity rearward to reduce shooter fatigue, accelerate target transitions, and enhance maneuverability in confined spaces and vehicle operations.

Every FN barrel is manufactured from certified MIL-SPEC ordnance steel utilizing FN’s renowned cold hammer forging (CHF) process. Forged around a precision-ground mandrel under massive hydraulic pressure, the barrel features an exceptionally dense molecular grain structure with a defect-free bore and a forged chamber that outlasts conventional button-rifled barrels under sustained strings of fire. The interior is treated with a heavy-duty hard chrome lining that provides superior resistance to heat erosion and harsh propellant fouling, while the exterior is finished in a durable, non-reflective Mil-Spec manganese phosphate coating. The 1:7-inch twist rate stabilizes a broad spectrum of combat and match projectiles, from standard 62gr M855 to heavy 77gr barrier-blind and OTM loadings.

Arriving 100% factory pre-assembled and ready for immediate drop-in integration, this unit eliminates the need for complex barrel disassembly or armorer jigs. The assembly comes complete with a factory gas block, multi-position adjustable gas regulator, short-stroke gas piston, folding front sight assembly, and an FN flash hider threaded to standard 1/2x28 TPI. Utilizing the SCAR’s proprietary monolithic receiver architecture, the entire barrel assembly can be swapped by the user in minutes using a Torx® T25 driver and a 62 in-lb torque wrench while maintaining factory headspace and point-of-impact consistency.

Features

Turnkey Complete Factory Drop-In Assembly:
Ships fully equipped from the FN factory with the gas block, adjustable gas regulator, short-stroke gas piston, folding front sight assembly, and flash hider pre-installed for immediate installation.

Cold Hammer Forged (CHF) MIL-SPEC Steel:
Hydraulically forged around a precision mandrel from certified ordnance-grade steel, producing an ultra-concentric bore and chamber designed to endure tens of thousands of rounds under hard-use duty schedules.

Authentic 14.0″ CQC Tactical Configuration:
Optimized for operators seeking the authentic military Mk 16 CQC profile, providing an agile footprint that minimizes overall rifle length and improves front-end balance without sacrificing mid-range terminal velocity.

Industrial Hard Chrome-Lined Chamber & Bore:
Features an advanced hard chrome interior lining that prevents chamber corrosion, ensures smooth extraction, and drastically extends throat life during high-tempo firing schedules.

Integrated Short-Stroke Gas Piston & Regulator:
Factory-calibrated with an adjustable gas regulator that allows quick tuning between standard firing and suppressed operation, maintaining smooth cycling and preventing excessive bolt velocity.

Folding Front Sight Assembly:
Includes the iconic SCAR gas-block-mounted folding front sight tower, providing an instant, rugged combat iron sight that folds flat when running low-power variable optics (LPVOs) or red dot sights.

Field-Level Modular User Installation:
Designed to interface directly with the SCAR monolithic upper receiver via captive barrel extension bolts, allowing caliber or barrel length swaps in minutes using a Torx® T25 wrench set to 62 in-lbs.

Fast 1:7″ Twist Rate & 1/2x28 Threading:
Optimized to stabilize modern heavy combat ammunition (including 62gr to 77gr loadings), with standard 1/2x28 muzzle threading to accommodate popular suppressors, quick-detach mounts, and aftermarket brakes.

Specifications