Here's the Drop block in Question, you can get these in different colors on Ali Express, they are great addition for a Notos build and gives the Bottle about 3-4 mm spacing apart from the Barrel.
Now the Problem I had with the one I received was the Regulator didn't work, it didn't let any air through it, I took it apart and found the Problem,
it was the Delrin Seat for the regulator piston was not Notched to allow air around it, basically it was a Plug, it sealed the entire regulator cylinder and kept air from getting to the gun, So I took a small round File and filed a Notch into it about 1/2 to 3/4 of a millimeter into the side of it, cleaned and reassembled and now it works great, nice to have an adjustable regulator that is adjustable from the outside, for lower pressure turn the screw in, for higher pressure turn the screw out, easy
here's a full explanation on how to fix the problem
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