XM ammunition is Metric caliber ammo that is contract overrun material. It may not meet all of the Mil-Spec requirements, however, it does meet all requirements of commercial amunition for pressure, form, fit and function.
|Caliber||223 Remington/5.56 NATO|
|Bullet Type||Metal Case Boat Tail|
|Bullet Weight||55 GR|
|Muzzle Energy||1224 ft lbs|
|Muzzle Velocity||3165 fps|
|Rounds Per Box||20|
|Boxes Per Case||25|
Determined at checkout.