I want to number my metal magazines so I can keep track of them. I have both narrow- and broad-tipped white oil-base paint pens plus a label maker. I’ve seen Glock mags marked on the side with paint pens but I’m guessing that’s not an option on smooth metal mags. The mags are for PX4s, M&Ps, Walther P99Cs, and CZ-75s.
Where should I mark them? Paint or label? Thanks!