Charger Guide

This:

Is a clip loader for an FAL magazine.

You attach it to the magazine:

Then insert your clip:

This one was made for metric magazines, but I modified it to work with inch pattern as well by cutting away part of the front to clear the larger front lug on the inch mags.

That modification is also a clue that I've had this loader since 1994 when I made an L1A1 from a parts kit.

I am amused that the Australian issue bandolier I purchased holds ten 5-round clips.  50 rounds.  To load a rifle that uses 20-round magazines.