I have here a list of weapons that could be implemented in the game.
Pistols:
Walther P38
Lahti L-35
SMGS:
Suomi KP/-31
Rifles:
Swedish Mauser
Kar 98K
G3
LMGS:
M1918 BAR
FN Minimi
Machine Guns:
FN MAG
PK Machine Gun
MG3
Explosive:
MK 19
FIM-43 Redeye
Attachments:
M203 Underbarrel
Laser Sight
Dazzler/Some type of Stunner
Feel free to give feedback and suggestions to add or remove weapons!