Anyone have any experience with these? Is there a better choice when it comes to a dedicated 1911-.22lr?

1. Reliable, picky about ammo?
2. Accurate?
3. Is it a full 1911, including internals?
4. Anything need to be replaced?
5. Does Kimber make a threaded barrel for this?

Thank you for the answers. I never seem to be able to call them during their business hours.