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SA80是一支突击步枪 1985年元月英国国防部宣布,英军开始装备恩菲尔德皇家兵工厂设计制造的5.56毫米SA80式步枪,以取代1957年开始装备的7.62毫米L1A1式自动装填步枪和1956年开始装备的9毫米L2A3式冲锋枪。英国拟购买17万支SA80。新枪克服了取代步枪的火力密度和灵活性的不足,也克服了取代冲锋枪的射程和精度不足,综合两者优点,在兼顾老式步枪的精确瞄准射击的基础上,吸取了冲锋枪的火力炽烈和灵活机动的特点。充分具有突击步枪的特性。正是为了提高步枪火力突击性,SA80的前身——XL64型突击步枪采用的是4,85毫米
SA80 is an assault rifle January 1985 British Ministry of Defense announced that the British Army began to equip the Enfield Royal Arsenal 5.56 mm SA80 rifle designed to replace the 7.62 mm L1A1 automatic refueling rifles that began to be equipped in 1957 and 1956 Equipped with a 9mm L2A3 submachine gun. Britain plans to buy 170,000 SA80. The new gun overcomes the deficiencies in the firepower density and flexibility of replacing the rifle and also overcomes the shortcomings of replacing the submachine gun with its range and accuracy. Based on the advantages of taking both of the accurate targeting firearms of the old-fashioned rifles, the new gun absorbs the blazing firepower of the submachine gun Flexible and mobile features. Fully equipped with the characteristics of assault rifles. It is in order to improve the assault rifle firepower, SA80 predecessor - XL64 assault rifle used is 4,85 mm