Quoted:
Looking for creative ways to number your mags.
Does anyone use stencils? What kind of paint is safe to use on mags polymer or aluminum?
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I'm far from anal about a lot of issues (don't give a crap about fit and finish, cleaning guns, etc). However, magazine failures are something I monitor...
I've tried Sharpie and Industrial Sharpie but they both wore off too quickly. I now use a paint pen.
My mags are marked with my last name (helps in a class or with friends) and the mag designation. I designate mags for Range and Social use (e.g. R1, S3, etc). Self Defense mags are tested thoroughly and then pulled out of my training rotation. I like to keep the miles down on them.
The reality is ... in spite of my obsession ... I rarely if ever have a QUALITY magazine related problem. I've never had a single OKay mag related issue in MANY MANY MANY years of using them.
ETA: The only mag failures I've experienced in the past 10 years have been PMag related.