Start with an AEG.
If you want a Gas gun then maybe a pistol or something but honestly I rarely use my pistol, it's more there for show than anything. That is unless you like rushing up and get below your MED and need to use a pistol, then it's a different story.
Not sure what the landscape for gas guns is now since I've been out of the fold for a but but if you seriously want one I believe the KJW M4 is one of the better beginner rifles out there because you can game it right out of the box compared to WE where you have to pretty much replace everything.
ಠ_ಠLess QQ more Pew Pew
READY TO >> RACE