小練桑のmurmur

The M82 rifle is a high-powered heavy sniper rifle developed by the American Barrett Firearms Company. It is currently used by many units and armies around the world, including the American Special Forces. It is also called the "Light Fifty" for its .50 caliber BMG (12.7 mm) load. The weapon is found in two variants—the original M82A1 (and A3) and the bullpup M82A2. The M82A2 is no longer manufactured.

這玩意就是背景中的那ㄧ堆槍，用的是.50(12.7 mm)的子彈，威力很大。