Originally Posted by Marathon
I want to mount a Regulator on the grip frame of my sterling STP. I do not want to use the stock Sterling Vertical SC adapter because it does not accept Macroline fittings. My grip frame has a hole cut for the fitting but I need to know the how big a frame the groove on the Phantom VSC will accept.
Thanks Phantom Owners. http://www.airsoldier.com/mm5/graphi...tomvertasa.jpg
You could just have someone retap the threads on your SC adapter.