Leave it to the Israelis.
As a civilian: that looks fun. Where can I shoot one and how much are they?
As a grunt: more weight hanging off me? Lame. More parts to clean and worry about keeping clean... not cool. On range days I'll have to wait for the rest of the idiots to zero not one but two bore axis? Screw that. And would this mean I have to carry TWO combat loads on my kit? Yeah, f*ck that noise.