Take zip ties, and paracord of your color choice, measure out enough paracord for the length of the zip ties. Take the inner strings out, put in the zip ties, and close it.
Viola! A loop that's a lil' thinner, doesn't come undone, and stays in a loop shape. Pop the bottom plates, put in the loop, replace plate, viola! A professional looking loop for your mags.

Neat tricks you learn from people in the know.