Thread: Length of a rifle with welded on suppressor?

I've got a .22 that I want to cut down and thread for a silencer/suppressor.
I know the law in regard to a firearm that is less than 762 millimetres [30 inches] in length (classed as a pistol).

However what if I cut my barrel down to 5"/13cm (rifle length 24"/610mm), and then weld my stainless steel suppressor that is 6"/15cm long onto it (making an overall rifle length of 30"/762mm).....

.....legal? (suppressor baffles come out from front of silencer for cleaning).