This request ultimately resulted in the development of a scaled-down version of the Armalite AR-10, called ArmaLite AR-15 rifle. During testing it was found that a 5- to 7-man team armed with the ArmaLite AR-15s has the same firepower as 11-man team armed with M14s. Also, soldiers armed with ArmaLite AR-15s could carry nearly three times more ammunition as those armed with M14s (649 rounds vs 220 rounds). The ArmaLite AR-15, officially designated "Rifle, caliber 5.56 mm, M16", was later adopted by U.S. infantry forces as the standard issue rifle.