The MGP-79A was designed at the behest of the Peruvian Navy in 1979 who
needed a new weapon for operations at sea. The design is a conventional
blowback model which uses a perforated barrel jacket to cool the weapon
after repeated firing. The design was a popular one and was in service
well into the late 1980's when it was utlimately replaced. The barrel jacket
can be removed to allow a suppressor to be affixed to the weapon.
Fires the .9x19mm-Parabellum round, in semi or full-auto, feeding from either
20 or 32-rounds magazines.
Picture and Information from: PIERANGELO TENDAS