The Special Operations Forces (SOF) Combat Assault Rifle, or SCAR, is a modular rifle

Rifle

A rifle is a firearm designed to be fired from the shoulder, with a barrel that has a helical groove or pattern of grooves cut into the barrel walls. The raised areas of the rifling are called "lands," which make contact with the projectile , imparting spin around an axis corresponding to the...

 made by FN Herstal (FNH) for the United States Special Operations Command

United States Special Operations Command

The United States Special Operations Command is the Unified Combatant Command charged with overseeing the various Special Operations Commands of the Army, Air Force, Navy and Marine Corps of the United States Armed Forces. The command is part of the Department of Defense...

 (SOCOM) to satisfy the requirements of the SCAR competition. This family of rifles consist of two main types. The SCAR-L, for light, is chambered in the 5.56×45mm NATO cartridge and the SCAR-H, for heavy, fires 7.62×51mm NATO

7.62×51mm NATO

The 7.62×51mm NATO is a rifle cartridge developed in the 1950s as a standard for small arms among NATO countries...

. Both are available in Long Barrel and Close Quarters Combat variants.

The FN SCAR systems completed low rate initial production testing in June 2007.