Since you mentioned 9mm; the best thing I've found about the relatively-lightweight, aluminum-bodied handgun suppressors, is that they can be fantastic for a completely different role:
- 9mm handgun => .357 Mag rifle (16" bbl minimum)
- 45ACP handgun => .44Mag rifle (16" bbl minimum)
Am not flying by the seat of my pants here; simply contacting the manufacturer can determine if the above application(s) are within their design envelopes.
With only 12oz up front & the stout Boyds laminate stock, the balance on this particular 44Mag rifle is /perfect/:
Attachment 323933
And here's a sub-11oz 9mm handgun suppressor on an M1 Carbine:
Attachment 323934