Thanks for all your super help. It's pretty much decided what to go for.
EDIT: is the brand D BOYS also good?
EDIT2: so because of my low budget it's these three rifles i'm choosing from:
DBOYS m4 CQB
DBOYS FN SCAR
JING GONG HK 416
can you please help me. it's def one of these three rifles, please just tell me which one of these is best buy. Also take in consideration that prices here in Europe are a little bit higher than on these web pages.