I haven't had to buy any in 4 years since flipping guns has o-ring perks and i ened up with a few master o-ring kits. the bad news is that im almost out of the ones that match up to the Thumper so im in search of some 90s that will fit..I sent an email to o-ring monkey asking about 90s..***Oringmonkey.com Oring Kits Paintball Marker O Ring Kits***
Ebay, camocow200 (1230) + 100% positive feedback
darr_musi (160) + 100% Positive Feedback
MCB 300 + feedback
"Mar" bro: welcome to the forum, super nice marker - hopeful for your sale.
"stargazer" It's ma'am actually, not bro.