“crimes caused by these weapons”?
Last time I checked all my weapons; including chainsaws, hammers, axes, knives, etc. were just inanimate, man made objects.
None of them appear to me able to jump up in the middle of the night, or day and cause any harm to anything without HUMAN DIRECTION and APPLICATION.
That is certainly true but I guess you know if the powers that be learn that you have those other “powerful weapons” at hand, they will seek to relieve you of those also. I’m hiding my toe nail clippers!