This can be an older thread, you may not get a response, and could be reviving an outdated thread. You should look at creating a new thread. I'm essentially planning to buy a Gen4 G29/30 frame right this moment to try and do specifically that with my Gen3 G30S slide. https://howdoibuyagock30gen4onlin82911.jiliblog.com/89738303/where-can-i-buy-a-glock-30-online-options