Under the tagline of “Lights Out, No Problem” Magpul releases their Tactile Lock-Plates. Basically, with Lock-Plates, you can discern which magazine is which by feeling the baseplate of the magazine.
Designed to fit PMAGs, Lock-Playes are offered in Type 1, which offers one bump and Type 2, incorprating two bumps. Combine this with a standard, smooth floor plate and you have three different tactile means to determine what magazines are loaded with, allowing you to keep your eyes in the fight.
www.magpul.com/products/firearms-accessories/magazine-enhancements
Tags: Magpul