It is therefore surprising that the proposed standard version of the XM8 was to be the carbine with a barrel only 318 mm long, from which fragmentation is only likely to occur at point-blank range, if at all.

• 因此XM8投标标准中卡宾枪的枪管只有318毫米长十分令人惊讶，这个长度下碎片效果根本上只有在近距离射击时才出现。