This submachine gun blueprint is in the Wiao Village, which you'll visit during the 5th Side-Ops mission. It can be picked up off a table in the prison, after making your way past a few locked doors.

Blueprint locations list: How to unlock all Handguns, Machine Guns and Sniper Rifles 6 Metal Gear Solid 5 Fan Theories So Crazy They Might Be True ...

Metal Gear Solid 5: The Phantom Pain contains 27 Blueprints for new weapons and security devices. Finding these collectibles allows you to build tech and weaponry to make your journey through the ...

While we won't be giving the exact location of the blueprint, just remember to sneak up behind an enemy and hold R2 or Right Trigger to restrain them. Then proceed to interrogate them and wait for ...