"9mm" magazine marker bands?

[PJD642]

What about ETS?

Nothing on their site.

Why not just mark the PMAGS on the dots with 9mm or some personal code to let you know?

I'm not concerned with my knowing what they are since I've already got them sorted by body color, it's more for other folks using them with me. Admittedly, you'd be hard pressed to chamber a 9mm round in a 5.56 chamber, but shyt happens.

I'm just gonna go low tech and stencil "9mm" on the sides of the mags with a black sharpie.