Hey if I attach a vertical adapter do I HAVE to proceed and add a regulator or can I just directly attach my CO2 tank to it? Thanks for your help!

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"Don't do the crime if you can't do the KEY LIME!"

You can thread your tank right into that. I used it for an expansion chamber.

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ok cool... what are the perks of doing that, if any, besides the obvious ones

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"Don't do the crime if you can't do the KEY LIME!"

The only reason I added the vertical adapter was to install the expansion chamber. Not sure of any reason to run your bottle vertical under the marker other then if its vertical then there is almost no chance of liquid co2 getting into the marker.

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ok cool and one last question, what should I do as far as sealing the threading so I don't have any leaks?

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"Don't do the crime if you can't do the KEY LIME!"

If you mean the threads going into the bottom of the power tube then some simple loctite will do. as far as the part that comes out of the forward grip the bottles oring will do the sealing. Hard part is getting it tight yet keeping it inline so it settles into the frame nicely. So when you tighten it up be sure not to go past that point.

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right. ok thanks dude i appreciate it

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"Don't do the crime if you can't do the KEY LIME!"

Where did you get your vertical adapter?