The Kindred V2 comes with a flat trigger, recessed ridge top cap, decreased voltage drop and upgraded recessed reverse locking ring.  It comes in full Copper or Copper wrapped Stainless Steel.

Features:

    510 connection
    Single barrel, 18650 battery compatible
    Slimmer, flat magnetic firing trigger
    Upgraded reversed recessed locking ring
    Sliver plated Copper contacts
    Recessed ridge top cap
    Decreased voltage drop
    4 digit serial number etched