The UMP is a classic and has been seen in many films. It's a solid build and looks incredibly intimidating as it is, but no matter who you are, sometimes you want to pimp out your rifle to make it look even more intimidating. This is where UFC's Silencer comes in.
All you have to do is switch out the outer barrel with with UFC's outer barrel with a 14mm CCW thread at the end, screw on the silencer and there you have it. The silencer doesn't work like a normal silencer does but if you wanted intimidating, this gives you intimidating!