Fn Barrel Ar-15 Button Rifled - 14.7" 1:7 Mid-length Gas Govt

The FN Barrel AR-15 Button Rifled — 14.7" 1:7 Mid-length Gas Government profile — is a mil-spec precision barrel engineered for professional and civilian operators seeking accuracy and reliability in a compact configuration. Built by FN America, a manufacturer trusted by military and law enforcement worldwide, this barrel delivers the accuracy of button-rifled construction in a mid-length gas system that balances velocity retention with controllability. Whether you're building a patrol carbine, precision rimfire trainer, or tactical rifle for home defense, this barrel meets the exacting standards of shooters who depend on their equipment under pressure.

Button rifling produces superior bore consistency compared to cut-rifled alternatives, resulting in tighter shot groups and enhanced velocity uniformity — critical for precision work beyond 100 yards. The 1:7 twist rate stabilizes a broad range of bullet weights, from 55-grain varmint loads to heavy match-grade rounds, making this barrel exceptionally versatile for various mission profiles. The mid-length gas tube system reduces bolt carrier velocity compared to carbine-length platforms, lowering recoil impulse and improving control during rapid fire while extending component longevity. At 14.7 inches, this barrel sits just below the NFA short-barrel threshold, offering compact handling without requiring a tax stamp or registration in most jurisdictions — a practical advantage for operators building compliant, maneuverable systems.

This FN barrel integrates seamlessly into any mil-spec AR-15 upper receiver; the government profile and standard shoulder dimensions ensure drop-in compatibility with quality receivers and handguards. Law enforcement armorer teams, military-adjacent civilians, and competition shooters favor FN components for their dimensional accuracy and consistency lot-to-lot — qualities that prevent feeding malfunctions and alignment issues. Installation requires basic gunsmithing: proper barrel extension staking, headspacing verification with go/no-go gauges, and torque-spec'd fasteners. For operators seeking a proven, compact barrel that delivers precision without NFA complications, the FN Barrel AR-15 Button Rifled 14.7" represents a smart investment in core rifle architecture.