meh, I kinda prefer buying/selling on forums... even discussing stuff is much nicer on a forum platform. Facebook's layout is not conducive of any discussion of depth.
Buying and selling here is easier because of the AV system filters out the retard kids that lowball a 600$ rifle for 50 bucks, and history of buyers and sellers can be easily tracked with the trader system available to forums, instead of trying to search for a guy's name to see if he had any dealings only to find nothing because he deleted his posts after the item sold or there was a dispute.
I futz with V2s, V3s and V6s. I could be wrong... but probably, most likely not, as far as I know.