小口径武器 meaning in English

minor caliber weapon
minor-caliber weapon

One was the objective crew served weapon , now known as the advanced crew served weapon and designated xm307 ; this is a machine gun in 25 mm calibre
此项研究显示了对小口径武器火力效果进行重大改进的途径。
What is clear is that the decisions taken by the us over the next few months will determine nato small - arms calibres for the foreseeable future
可以很清楚的事实是美国在未来几个月中做出的选择将决定北约未来小口径武器的口径。
However , the us army , joined probably by the other services , is proposing to replace all of its 5 . 56 mm small arms and does not have large stockpiles of 5 . 56 mm ammunition ? indeed , they recently suffered a shortfall due to high expenditure in iraq
但是，美国陆军，也有可能有其它单位参与，正在计划替换其所有5 . 56毫米小口径武器并不再增大5 . 56毫米弹药的库存? ?实际上，由于在伊拉克的大量消耗现在出现了短缺。