I was wondering if the info below had been applied to any new production non window pmags.
SLIM-LINE RIB & BODY PROFILE
To enhance compatibility with double and triple
magazine pouches, side-wall ribbing has been
re-designed with a slim, anti-snag profile.
Front-to-back and side-to-side width and thickness
have been adjusted to ensure drop-free
compatibility with as many weapons as possible,
including non-Colt spec AR15 rifles and the FN SCAR