That's part of the fun of the 1911- there are MANY things you can do to make the weapon YOURS. From simple to complex. If I were you, I'd start leafing through the Brownells or Midway catalogues and looking at parts. Things like swapping slide stops, MSH's, grip safeties etc will get you started. A clue - "drop in" doesn't always mean drop in. Clue #2 - When a part has to be hand fit, less stock removal and more frequent checking in the weapon will save you MUCH frustration. don't ask me how I know, I just do.