ump is .45 while uzi is 9mm so .45 is bigger and is stronger
UZI
Probably an m9 handgun. Machine gun wize most likely a uzi or uzi variant.
uzi submachine gun
an uzi
UZI
M means Modern, because it is a new model of the Ak-47 series, like UZI haves (UZI SMG, Mini UZI, Micro UZI, UZI Pistol).
Spelled Uzi, it is a submachine gun made in Israel.
The fair retail or trade price for a Model a Uzi 9mm carbine is 1600 dollars US.
uzi (עוזי) is pronounced OOH-zee. It means "my strength" in Hebrew.
Scar-H
Uziel Gal invented the uzi gun