The only comment I'd, hesitantly make, having not made the gun; is the desire for reversibility.
In my experience that's as easy with a custom gun as with a marriage. And it shouldn't be an initial objective or it certainly will be a final outcome.
There is no nonsense so errant that it cannot be made the creed of the vast majority by adequate governmental action. -- Bertrand Russell
"Never attribute to malice that which can be adequately explained by stupidity." Robert J. Hanlon