The Army was toying with a personal weapon system that employed a rifle similar to that one. Their idea was that ops controlers could literally get a "gunsight" view of the fight. The screen allowed a soldier to poke their gun around a corner and fire semi accurately without exposing themselves to return fire.
The Army system also included remote monitoring of troops' vitals, hyper accurate gps location plotting, enhanced, hands free comms, and (I think) a heads up display in their helmets showing gunsight view of their weapon, target aquisition of other sources, drone surveillance video, and even video, audio, and text input from their control.
I guess the next generation of experiments will seek to implant all that tech so we can field the T-101 model of Terminator. I just hope they won't all have that accent.