if you look at the first post, you can see the goalkeeper is already done
EDIT: note that the 2 parts that are not directly connected to the mount itself are the ammo drum and the control cabinets. of course this system is not complete, (see heuhens image for that) but the systems which are close by the mount are included. while I normally don't add the cabinets (as somebody should research stuff like that themself, and I don't know a lot of bucketeers who check internal space that exact) but as the one who drew this for me included them, I thought I'd let them in (considering that similar parts for the mk 26 are just included in the system itself, it certainly isn't wrong to include them to guns as well)