1 man army

[Caradhras]

One of my players is role-playing to the hilt the archetypal 1 man army. He originally was using an M60 but has moved up to the PK (thanks to the RoF in the original rules which I use) however now he is looking for better.

He had visions of being Blain from Predator but my research on the minigun convinced him he couldnt use one unmounted, the only side-grade I can find is an http://en.wikipedia.org/wiki/SS-77 I dont know whether the http://en.wikipedia.org/wiki/Pecheneg_machine_gun existed.

Anyone know more about a portable 1 man weapon/mg my player would love? (the charachter has the firearms knowledge - but us Brits dont )