I have a 2018 AIAT fixed stock with the pistol grip furniture. The tinkerer in me can's stop thinking about the MPA, and MDT vertical grips, and I have a few ideas I want t to try. However, I don't want to mess up my perfectly good set of skins if my ideas don't work out. So if you have anything laying around after converting to a thumbhole, or putting in a chassis gathering dust, let me know. Thanks.