A free mod for Fallout 4, by C1PH3RR.

The 10mm SMG is a low-cost, high-rate of fire submachine gun made for close-quarter combat.

This mod adds an enhanced version of the SMG from Fallout 3 and Fallout New Vegas. With the help of this mod, you may create a completely tactical submachine gun for building clearance and is quite effective against fast moving enemies like animals and ghouls. It’s also effective against raiders in confined spaces like the subways in DC. The SMG is a highly effective weapon in the hands of the right person.