The "Tommy Gun" is the classic .45 submachine gun made famous in American Gangster movies.  It also saw action with the US Military in WWII.

11.5x23mm TL 6 straight round (close enough to .45 ACP for government work)
19 gm Ea = 860 Cr0.76 Ball Cr1.52 Tranq & HE

23cm light barrel 0.46Kg Cr92
E=1419

Light selective fire (ROF 5) self loading receiver
15cm 1.432 Kg Cr35.5 Rcm .95

Wooden Stock 25cm 1Kg Cr25

20 round box magazine 0.27Kg Cr3

TL 6 4cm muzzle brake 0.2 Kg Cr50 Rcm .9

Unloaded weight = 3.09 Kg (without empty magazine)

Loaded weight = 3.73Kg

Recoil SA = 2
Recoil 5 = 5 bulk = 4

Dam = 2 Pen 1-Nil Ball SR = 97m

Dam = 3 Pen Nil HE SR = 73m

Dam =-1 Pen Nil Tranq SR = 30m

75 round drum magazine 0.9 Kg Cr9

Loaded weight=5.42 Kg

Recoil SA = 2

Recoil 5 = 5

100 round drum magazine 1.2 Kg Cr12

150 round drum magazine 1.76 Kg Cr17.6