You can't have any trades period if you're in the US AFAIK due to trademarks and such (unless it's licensed by the company you have trades from).
Also I believe there may be some weird state laws in NY governing airsoft, airguns, and the discharging of such devices. Really you're probably better to go to somewhere like airsoft retreat to ask (more knowledge of US federal and state laws). Although.... I've personally heard that the US airsoft forums are more underaged kids who chairsoft and spew bullshit and misinformation, so take everything from other US airsoft forums with a grain of salt. More reputable sites like ArniesAirsoft and such are probably a good place to go.
ಠ_ಠLess QQ more Pew Pew
READY TO >> RACE