You've already got answers for your question in your other thread. Why make a new one?
As long as you dont carry it out in public, ANY fieldable airsoft gun is allowed.
Buy a gun case for carrying it around outside.
DO NOT play in a random forest that is public property. You will get in all kinds of shit.
This was suggested in your other thread as well, get Age Verified. Its the only way you'll be able to participate in games.
Playing out in a 'forest where no one can see' will only get you screwed and your gun taken away.
H&K G36c (KWA) / Glock 18c (TM) / Kimber LAPD SWAT Custom (TM) / Mossberg M500 (ACM)