your revolvers hammer has some issues. the shot gun should have had moving hammers and an opening breech. The rifle should have had a moving bolt. Lastly the tomson is a closed bolt weapon, AKA-the bolt moves backwards then forwards, not like yours.
I've made KNO3 smoke grenades before and they do work a lot like that, but it's also a little off too. Over all I liked it, even if it did lag a little near the end
the ak is not a belt fed weapon....try modeling it after a PK light machine gun instead (and the word you are looking for is ejection port...not cartridge escape)
I understand, what language do you speak normally, I probably know it (I know Russian, German, french, Spanish, english and some dutch/afrikaans), it would make it easier for you to understand my comments on your work.
nice, but it dosent seem to eject the shells, and it dosent look as good as the others did, half the appeal of the Luger is the exotic curve of the grip.