I wouldn't use the dishwasher. The kitchen sink is not out of the question, though! I once blue printed and built a small block chevy in my bedroom. Rebuilding carbs on the living room table.
One would almost need to plan for multiple bug in/out sites. You would always have a bag that would get you home from work, 72 hour bag. To plan for not having a home to bug in to, one would need a second bug in site. This way you could go to your house and stay there or pick up larger amount of...
I was told the same thing. Something about: They fit initially, but there are slight changes that will allow the 3rd generation slide and recoil spring to sit not fully supported in the gen 4 frame. After a number or shots you will see frame damage.
This is from a Glock Armorer that I deal with.