I recorded this video a while back showing the disassembly and reassembly of a Southern Pneumatics Southport / KC No Hot Shots Paintball Regulator made by Eric Scott at Southern Pneumatics and distributed by David Kermode at Kermode Concepts.
You can see the internals clearly in this video including the belleville washers used in construction and how this regulator is nearly identical to the later KC No Hot Shot, Sheridan RG1 and the CMI Regulators.
And another look at the internal pistol and assembly from one of the Southport / No Hot Shot Regs.
The Gold Southport reg is the original design and David Kermode saw too many safety issues with the gold regs so he re designed the body and broke his partnership with Eric Scott (who made the gold regs). Kermode is more well known for his KC Trouble Free Oil though.
Find more articles on the history behind Kermode Concepts at https://paintballhistory.com/tag/kc/
And articles on Southern Pneumatics at https://paintballhistory.com/tag/southern-pneumatics/
And find parts for KC, Sheridan and Southern Pneumatic regs at http://www.baccipaintball.com/air-bottomlines/regs/kc-no-hot-shots.html