I like the idea of conversion kits so I can fire a hundred or so rounds of cheap ammo through the platform I plan on training with before firing much more expensive rounds for the real training.

But, I assume you are carrying a 45 ACP in a BOB is because you want some stopping power for protection. Where is that protection when you have a 22 conversion kit on your weapon?

I think a better idea for a BOB is a Ruger Mark III. You can pick one up for about the same price as a good conversion kit and be able to hunt small game and still be able to deploy you 1911 if you get in trouble. Plus, time has proven the Ruger line of 22 pistols to be second to none in reliability and accuracy which is something a conversion kit will not have.

You will be adding weight but I am guessing you would keep the kit in a box or something when not in use, so it would take up just as much or more space than the Ruger.

I'm sorry for not addressing your question, but I don't have much experience with 1911 conversion kits and I just wanted to give me input.