Their sites a bit confusing as to what adapters I needed but emailed them Sunday and had a response Sunday evening. For my 306 I needed their 510-510 adapter and an XL drip tip. Got it today and seems to work as advertised. No juice leaking anywhere and fit like a glove. They're standard hole was perfect for my kind of draw so I'm good to go. Hoping the 306DCA is going to rock and will take my drip shields place but it's great to have in my bag of goodies anyway. Here it is. This was their blue steel one.

