Checking out the Sphynx (Printable 92fs) with a thermal camera.

94 suppressed shots in about 90 seconds. I love this build! This is the second sphynx I've built and one of my favorite parts is that with a clean print, almost no filing is necessary. Thank you Beretta for good tolerances! And thank you Gerald Katz for this awesome design

TL;DR: you'd have to shoot a huge amount for heat to become an issue on the printed rails at least for filled nylons.