Although the 12.7 mm HMG is no longer the standard equipment of FB-6A system, it can be added as an option, and is interchangeable with other machine guns.
虽然12.7毫米重机枪已不再是FB-6A系统的标准武装，它可以作为一个添加选项重新装上，并可以与其他机枪型号互换。