sounds like the cops got u over a barrel kindda, but they siezed your weapons and didnt charge you for the pot? they might think you wont say anything in fear of getting busted with a controled substance while in possesion of a firearm, which is a felony and you would never get to purchase of carry again. yet if no proof of the pot exsists, such as ticket of police report, then you have a fighting chance due to their failer to properly file a report.. Kindda a catch 22...good luck
remember you have rights, dont be stupid , ask for a continuence, due research, get a lawyer, but carring drugs with a gun only makes things worse for us "law abiding folks"....shoulda left yer guns at home...........................