My plan is for a Rem 700 SPS Tactical with a McMillan A4 or A5 stock. McMillan said that neither pillar nor glass bedding are required since I would send in the barreled action to them and it would be a tight fit. Anyone out there who bought a McMillan (A4 or A5) drop in or full installation (glass/pillar bedding)have any comments on which way to go, or wish you did it differently? Any feedback would be much appreciated.