FN America Barrel M16 16" Mid Length 556

The FN America Barrel M16 16" Mid Length 5.56 is a precision replacement barrel engineered for AR platform rifles requiring a robust mid-length gas system configuration. Built with button broaching and a 1:7 twist rate, this 16-inch barrel delivers the velocity-accuracy balance that operators prefer for patrol carbines, qualification training, and field-proven reliability across extended shooting cycles.

The mid-length gas system reduces carrier velocity compared to carbine-length alternatives, lowering wear on bolt components and springs while maintaining reliable cycling with standard 5.56 ammunition. Button broaching produces consistent rifling that enhances bullet stability and shot-to-shot consistency. The 1:7 twist accommodates modern 62-grain to 77-grain projectiles, the pressure band most operators run for intermediate-range engagements. At 2.06 lbs and measuring 16 inches in overall length, this barrel keeps the complete rifle within handy proportions without sacrificing velocity critical to 5.56 ballistics.

This barrel suits law enforcement, military training units, and serious civilian shooters building or upgrading carbines for both combat-distance work and precision handloading applications. The 16-inch length positions this as an intermediate between 14.5-inch recce barrels and full 20-inch rifle configurations, making it ideal for shooters who want manageable ergonomics without excessive velocity loss. FN America's manufacturing standards ensure consistent bore and chamber tolerances that support tight groups and reliable function under field conditions. Compatible with standard M16/AR15 upper receivers and gas tube systems.