This is probably heavier than you are looking for, but I have a 700 Police takeoff stock that was inletted by Badger Ordnance for the M5 if interested.
I have a fajen grey laminate that weighs 3.2lbs inletted for PTG bottom metal..Has been devcon bedded to a Stiller preadator RH SA. Let me know if you"re interested. $120 if you want it.