美国的21世纪理想单兵战斗武器(OICW),是由三军轻武器规划委员会提出并于1994年开始研制的。从那时起,美国步兵基础武器系统便孕育着一场大变革的来临。1999年,以阿利安特公司为首的研制组终于将OICW提交部队进行试验。该武器由5.56毫米卡宾枪与20毫米半自动榴弹发射器上下组合而成,并配用高性能榴弹和先进的计算机射击控制系统(以下简称射控系统)。倘若按三军轻武器规划委员会的计划顺利进展,该武器 The 21st Century Ideal Individual Combat Weapon (OICW) in the United States was proposed by the Armed Forces Planning Committee and started its development in 1994. Since then, the basic infantry weapons system in the United States has given birth to a great revolution. In 1999, the research group led by Aliant finally submitted the OICW to the army for testing. The weapon by the 5.56 mm carbine and 20 mm semi-automatic grenade launcher up and down combination, and equipped with high-performance grenades and advanced computer shooting control system (hereinafter referred to as shooting control system). If the smooth progress of the plan of the SALW Planning Commission, the weapons