Will Houdini be supported and compatible with AR? Can Python be utilized to write scripts for Houdini to work with AR? How would you best recommend approaching work with Houdini and AR?

Although Houdini could theoretically be used, CAD programs are probably your best approach for designing an manufacturing components compatible with the AR weapons platform. Data for upper and lower receivers are probably more available in CAD formats anyway.

From what I hear, outputting USDZ for AR on iOS works as one method. @thecgwiki (Matt Estela) on twitter had some demos. Here's the page to his notes on it https://www.tokeru.com/cgwiki/index.php?title=HoudiniKinefx#Kinefx_to_agents_to_lops_to_arkit [www.tokeru.com]