The only one that I know of that was easy to convert was the M1 Carbine.
They sold a kit at the shows with a template, a drill bit and a spring. The instructions went something like this
1) Do NOT place the template over the receiver as shown in the picture.
2) Do NOT drill a hole using the provided drill bit at the place marked on the template
3) Do NOT hook the spring from the hole to the place on the trigger mechanism shown in the instructions
For laws, we should go with the laws in Vermont or WV. Open carry, pistols are not licensed, but to conceal carry you need a license. The license should be relatively easy to get. In WV the background check took less than five minutes and I was done. I think you need a check to make sure the person you are selling to is a legal resident, not a convicted felon (traffic court does not apply here) and not too crazy...
I am not in favor of restricting pistols to store owners and bankers as they do in NY. It is almost impossible to get a pistol permit in NY.
For guns, right now just the 12 Ga pump. Doing skeet and trap for now. Got my kid into it and now he is better than me. He wants a Browning O/U $$$$
Soon I will get the Taurus Judge with the ability to fire .45 and 410 shells! Perfect home defender...
I also want the K98 I passed up a few years ago. Love old bolt action mil rifles!
The wifey wants a Thompson! but $4000 for a semi-auto Tommy gun is a bit much. Also it will knock her on her @ss!