Actually a pretty good idea if wearing NVGs…
Designed at the request of “professional customers who work nights” Magpul’s new Tactile Lock-Plates enable users to identify mag loadouts by tactile feel– a sort of tactical braile, if you will.
Available in Type 1 – single ridge and Type 2 – double ridge designs that work with PMAG Gen M3s 30s without altering performance, the mag enhancement comes in the form of a 1/8-inch raise ridge that can be identified in the dark by touch– especially if mounted in a chest rig. By mixing and matching the single, double and the standard no-ridge variants, a user can carry and identify three separate ammo choices in no/low light situations.
A five-pack is $9.99 and you get your choice between gray and black– though in the dark I guess it doesn’t really matter.