Just listed a couple AIWB light bearing options for Glocks running X300 Ultra A/B lights. They're right hand with adjustable ride height and retention. Choice of Dynamis Zero clips or metal Raven overhooks. Also included is a set of Biothane closed loops. $99 shipped and the code PF15 will get you 15% off at checkout. Additional discount available for active duty Mil / LE.
https://red1usa.com/product/speedmaster-x2-lumen/