You might better check on the legality of that.
Where I live it is perfectly legal.
Nothing prohibiting it in the law, and local range guys confirmed this. A G17 to carbine conversion is even sold as a HD set up!!
Generally any conversions/upgrades such as silencers, and lasers are to be used at ranges only and that is exactly how I intend to treat this.
Over here it is shortening a gun that will get you in do-do!
You cannot wake someone who is pretending to sleep. Stop pretending. Wake up.
Freedom: Please enjoy responsibly.