These markers are mostly Spyder compatible, so you can fit any spyder barrel, low pressure chamber, beavertail or (I think) replacement grip frame. Things like vertical regulators or expansion chambers are standard fittings so you shouldn't have any problems there.
Bottom lines are usually standard, except on Spyders which have differently-spaced screws. Look at the screwholes on the bottom of your trigger frame; if there are 2 holes one in front of the other then any standard bottom line should fit; if the holes are "zigzagged" then you need a spyder-compatible bottom line.
Hope that helps.