“大狙”是游戏者对大口径狙击步枪的简称。“野战步枪”的概念是20世纪60年代提出的。它并非是指一种新型步枪,而是为了区别AK47和M16一类使用中间型或小口径枪弹的步枪而提出的。第二次世界大战,中间型枪弹的出现和成功应用.预示着重新审视步枪的战术任务,特别是有效射程。战后,美国虽然坚持步枪射程不得低于1000m的观点,使北约1953年底确定了7.62mmNATO枪弹;但此后不久,也就在1957年,5.56×45mm枪弹及AR15步枪问世,并在越南战场 “Big spy” is the game player on the short-caliber sniper rifle. The concept of “field rifle” was proposed in the 1960s. It does not refer to a new type of rifle but to a distinction between AK47 and M16 types of rifles using intermediate or small-caliber bullets. The emergence and successful application of intermediate bullets during World War II and intermediate bullets heralded a renewed examination of the tactical tasks of rifles, in particular their effective range. Although the United States insisted on the idea that the rifle range should not be less than 1,000 meters after the war, NATO fixed a 7.62 mm NATO bullet at the end of 1953; but shortly thereafter, in 1957, the 5.56 × 45 mm bullet and the AR15 rifle came out and were on the Vietnam battlefield