Originally posted by deadmanbluff
what did you do to the part where the reg screws in it looks like you have two of them? what reg do you have and how do you like it?
That extension piece is a guage collar from fireball mountain found here
. Lets you add a guage and a little length to a short reg like the aka 2 liter...they only come in dust black, tho, but it still looks nice on the gun