FN America

Overview

The FN AR-15 M16 Barrel features a 10.5-inch M4 profile designed for 5.56 NATO caliber, making it an ideal choice for compact builds that require maneuverability without sacrificing performance. With a carbine gas system length and a twist rate of 1:7, this barrel ensures reliable cycling and stabilization of a variety of bullet weights, enhancing accuracy and reliability. This barrel is commonly found in builds that utilize a carbine gas system and are chambered in .223 Wylde, providing versatility for both 5.56 NATO and .223 Remington ammunition.