The video explains why the rifle is such an efficient, and ultimately dangerous, weapon.
It's not every day that a butterfly enthusiast gets an M4A1. But Monday was that day.
An unloaded XM5 rifle is two pounds heavier than an unloaded M4. But the XM250 is four pounds lighter than the M249 SAW.
The rifle is for scouts, engineers and infantry squads.
Magnet fishing duo reels in two sniper rifles.
The Army is slated to pick the actual weapon in the coming months.
The weapon can be chambered in three calibers.
Marines landing in Australia, Air Force Defenders in action, Army Strykers in Poland and more in this week's Frontline Photos.
Although Army officials knew the gun was unloaded, they said they recognize that others did not.
Criminal investigators are looking into an M4 rifle that went missing after a training event.
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