I particularly like the "remove all cartridges from the magazine".
This could've been understood if you do replace the magazine, but...
I mean, sure, removing the rounds out of your magazine is a good idea,
the spring would be much happier if you didn't leave it under tension
but I don't quite understand why it's germane to the disassembly of
the gun, to the point that it's marked in red for attention.

...!
Stoke Mandeville, Esq & The Victorian Ballsmiths
"Nobody Want Verdigris-Covered Balls!"