Originally Posted by axxe55
grips could raise the value somewhat if you invested some serious money in some truly nice grips in stag, ivory or exotic woods. but wouldn't lower the value as they could be replaced with the OEM grips as long as you still have them. i always keep the original grips for a pistol if i change them out. plus they are not a permanent alteration to the pistol and can be easily reversed.
^ Nailed it!
When I remove the stock grips from my guns I put them and the screws in a zip bag and store them, and any other original parts removed, in the gun's case. This way I can restore the gun to it's original condition. (That's if you only make non-destructive changes.)
If you install an expensive set of grips like Sambar Stag, Mammoth Bark or Ivory and want to sell the gun, advertise it with the disclaimer that the gun comes with it's original grips. There will be an up-charge for the premium grips shown if they want them.