The SteamGeezer and Son Independent Traders demonstrate how they did a mod to the Snow Wolf M41A AEG... "This is a new magazine baseplate for the Snow Wolf SW-11, the airsoft version of the iconic M41A Pulse Rifle from the Aliens film.

The supplied cover for the magazine well looks OK, but it's a separate piece and doesn't allow access to the spring tensioner on the magazine, so I knocked together a design very quickly in Tinkercad for a new baseplate that attaches to the magazine (no glue or anything needed - it just clips on to the magazine) and allows access to the winder.

It's a fairly crude design, I'm not a 3D modeler, but it does the job. If anyone wants to improve upon it, do feel free to do so.

I printed this on my old Anet A8 with no supports."

You can check the STL here.