Federal American Eagle 5.56 (223 Rem)
55 Gr. FMJ
XM ammunition is Metric caliber 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
Model American Eagle
Bullet Weight 55 GR
Casing Material Brass
Application Performance / Protection