Looking to trade my 0 moa Geissele for a 20 moa Badger c1 or 20 moa Geissele. Not sure if the normal (not mk5 specific) Geissele has enough space between the rings though.
Make sure the person you're messaging is trusted and do not use PayPal Friends & Family for your purchase, this is a common tactic for scammers. Keep safe!