I have had over a dozen Class III items transferred through Trop and bought another 3 from them directly. From silencers to SBRs these guys are very knowledgeable very easy to work with and go overboard to ensure you are happy and all the paperwork is done properly. They make the process as painless as possible. I would not use another Class III dealer unless I were to move out of state. I would recommend Kyle or Ben as your go-to guys. They are Class III and NFA paperwork SMEs.