Several parts available for P320's and P365's.
P320 Grip Modules X series-40 dollars a piece
P320 X Carry Slide w/ Night Sights (optics cut for what I think is a romeo pattern sight, not totally sure)-250
P365 slide/barrel/recoil spring assembly(no cut, includes night sights)-300
Wilson Combat P365 (standard) Grip Black-40 Dollars
Cash only, willing to meet in North Seattle or Shoreline.