Plenty of LPR-FG's in stock, if these dont move off the shelf there probably wont be another run.
Curved or Straight Grip $175
This comes complete with mounting hardware and 1/16" ID low pressure barb, ships raw, assembled or not.
Rail requires a slot for 10-32 mounting screws. Low pressure airline comes up between the two mounting screws in the rail.
Regulator tops and oring carriers:
Hardware and orings:
LPR Hose Nipples: