Jonathan, the Compass II retained the same magazine well as the Gen 1 Compass for magazine compatibility. The best features from the original Compass have been carried over to the second generation, including 5R rifling, a three-lug bolt with a short 60-degree throw, a three-position safety and a rotary magazine that holds five rounds in standard cartridges or four magnum rounds. Cheers and stay safe! Magazine available here : midwestgunworks.com/page/mgwi/prod/tc-compass-mag

Yes the gen 1 mags will work with the Compass II, the mags are unchanged the main upgrades are the trigger, barrel threading options and offering them in a variety of scope included packages.
Magazines in stock here
midwestgunworks.com/page/mgwi/prod/tc-compass-mag