Add Yahoo as a preferred source to see more of our stories on Google. Soldiers with the 10th Mountain Division recently tested a new machine gun optic for the Mk 19 40mm grenade launcher. The new ...

Sgt. Trever Linberg, a helicopter repairman with 10th Mountain Division, tests the new XM152 mounted machine gun optic on the Mark 19 40mm grenade machine gun. (Sgt. Matthew Connor/Army) Soldiers with ...