Depends on whether you
buy all the parts individually or not. If you
buy the
full collector tank assembly as Bruce has it listed on his site, then it's already got the connector and firing pin as part of that package. You'd just need that and the
GGTS Ody base
You only need to buy the separate firing pin and connector if you're getting all the parts individually. Doing it the piecemeal way requires these parts (listed in order from bottom to top):
-Connector
-Connector insides (firing pin)
-Collector
tank
-Control Ring
-GGTS Ody base
Adjustable draw cap would be optional and only necessary if you wanted to use the air control with regular attys and cartos since it is not used with the Ody base ;-)
I'm not sure if the necessary o-rings come with those parts when bought individually or not
I hope that helps with the confusion. Reading through the thread the info is quite disjointed, particularly if you aren't already familiar with the parts