Submachine gun

/sˈʌbməʃˌiːn ɡˈʌn/

Submachine gun

an automatic gun that is not heavy and can be easily held and carried by hand

Examples

1. uh, That friction and the weight allow this to operate as effectively a blowback Submachine Gun.

2. And that's just simply Submachine Gun, 9mm, F1.