Come out to a game at Flag Raiders, the field is small enough, you can give your Lucid gun a try too. Post up in the games and events thread and Zeon will come out and AV you.
G&P internals aren't garbage, but to have them run really well they'll need some work. If you want something that will be solid and newbie friendly I'd suggest VFC.
I'd recommend you start off with electric guns, and move on to gas after if that's what you desire. Gas guns are more expensive to run, less consistent and generally require more care.
Guardians of Asgaard - KF32
VFC H&K 416C
VFC KAC SR16 JL Billet SBR
TM FN Five-seveN