FN America 10.5" Button Broached Barrel - 5.56mm NATO - Carbine-Length Gas - 1:7

FN America 10.5" Button Broached Barrel - 5.56mm NATO - Carbine-Length Gas - 1:7

Purpose-built for elite close-quarters maneuverability and relentless reliability, the FN America 10.5" AR-15/M16 Barrel delivers true combat-grade performance in a compact footprint. Precision-crafted from premium, U.S.-sourced Chrome Moly Vanadium (CMV) steel in strict accordance with Mil-B-11595E specifications, this barrel is engineered to withstand the punishing heat and pressure curves of hard-use short-barreled rifle (SBR) and AR pistol platforms. Whether you are assembling an agile duty carbine or a dedicated home-defense setup, FN’s legendary manufacturing heritage ensures dependable operation when stakes are highest.

Every barrel features precision button broached rifling with a versatile 1:7 twist rate, stabilizing a wide spectrum of duty-grade projectiles from 55-grain tactical loads to heavy 77-grain defensive rounds. To maximize duty lifecycle and maintain flawless cycling, the bore and chamber are lined with durable industrial hard chrome to resist aggressive heat erosion and corrosive fouling. Individually subjected to rigorous proof firing and non-destructive testing, this 10.5-inch carbine-gas barrel sets the benchmark for compact AR-15 reliability.

Features

Mil-Spec CMV Steel Construction:
Manufactured from U.S.-sourced Chrome Moly Vanadium steel certified to Mil-B-11595E standards, providing exceptional tensile strength and superior thermal endurance under rapid strings of fire.

Precision Button Broached Rifling:
Expertly rifled for tight bore tolerances and uniform groove depth, ensuring dependable downrange accuracy and consistent projectile stabilization.

Chrome-Lined Chamber & Bore:
Heavy hard-chrome lining safeguards critical internal contact surfaces against heat erosion, friction, and environmental corrosion while promoting smooth cartridge seating and positive extraction.

Dual Proof Certified (HPT & MPI):
Each barrel is individually High Pressure Tested (HPT) and Magnetic Particle Inspected (MPI) to detect micro-stresses or structural flaws, ensuring absolute mechanical integrity straight from the factory.

M4 Feed Ramps & Barrel Extension:
Features precision-machined M4 feed ramps designed to deliver uninterrupted, jam-free feeding across modern defensive, duty, and military-profile ammunition.

Manganese Phosphate Finish:
Treated with a durable, non-reflective matte black manganese phosphate exterior coating that resists abrasion, oxidation, and harsh outdoor environments.

Specifications