Thanks for posting this here Dave. I saw the article on Komrad News, and they gave a different number of required signatures than you had in your article.
Also, can you link to the actual initiative in your article? My apologies if it was in there and I didn't see it. I'd like to compare it to HB 1588 and see how similar it is. If it's basically the same then it's actually a functional ban on all private sales since there were no practical ways to get the BG checks listed in HB 1588.