Tikka Performance recoil Lug, Glades Armory shroud and bolt hand, CDI bottom metal.  Flatten that annoying screw head just a hair to get another couple turns on the trigger adjustment.  Turn down the threaded muzzle to accept my suppressor adapter (I run a 7.62 phantom). 

4-6 month wait on a McMillan or Manners stock quashes the impulse buyer in me.