The SOF Combat Assault Rifle, or SCAR, is a modular rifle made by Fabrique Nationale de Herstal (FNH) for the U.S. Special Operations Command (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 5.56x45mm NATO cartridge and the SCAR-H, for heavy, fires 7.62x51mm NATO ammunition. Both are available in further variants such as Long Barrel or CQC (Close Quarters Combat). The FN SCAR system completed low rate initial production testing in June 2007 and was scheduled for limited fielding in the fall of 2007.