I have an old gen 2 g21 that really isn't serving a role. Was toying with the idea of getting a p80 frame with rail on it so I can mount it in a MCK chassis. But now I'm seeing all the p80 kits are gen 3+ only. Are there any for a gen 2? Will a p80 frame fit in the MCK?

Thought it would be cool to have a little hard hitting .45 PCC essentially.

Thanks y'all.