new offence of "supplying a gun".

[Carnebwen]

If its rented and you get away with whatever the crime was there is no evidence left. You don't get caught randomly for owning the gun or ammunition. It is less hassle.
I think they might charge more if you intend to fire/shoot someone.

Its all bullshit anyway. You get more time in prison using a gun but less for a knife. BAM! everyone just uses knives instead.