In addition to attachments mentioned above, this modularity allowed for quick repairs, barrel length changes, and even caliber changes in the field.
除了以上介绍的，它的模块化可以快速修理，更换枪管长度，甚至更换口径。
A safety clip or retainer must be installed to prevent attachments, such as chisels on a chipping hammer, from being unintentionally shot from the barrel.
必须安装保险夹或护圈，以防止配件(如气錾的凿刀)从凿筒中意外飞出。
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