All laws are similar. If you dont know about them, then restrain the use of the gun to your basement. As it's been said, use common sence. Don't use it in public places. Always apply the 4 rules of fire arMs handling. Get av. And the need for you to request infos about that shows that you are not ready to use such items.
SRC HK416 Gen III Pro AEG
KWC Desert Eagle