I have a factory new Rem 700 ADL in 7mm mag that I'm tearing down and rebuilding as a 300 win mag. I have purchased a B&C M40 Medalist stock to replace the factory ADL stock. My question is around the cartridge feeding device. I purchased a factory DM Trigger Guard and box mag setup that came off of a 700 PSS from a popular firearms related auction site. I figured this would be much better than cycling the bolt to remove round after round when unloading. I did so on the assumption that a 700 action is a 700 action, and the rest is just details on stock, barrel, etc. I'm now reading posts- about 50/50 ratio where it says the factory DM option cannot be done without modification to the 700 action (removing feedrails?) The other 50% say it can be done do problem just by bending the lips of the box mag. I'm also noticing that it will probably require some modification to my new B&C stock to allow space for the mag release button, which I don't want to do but may have no choice. I could make all of these problems go away by purchasing an HS-Presision or Badger Ordinance DM option, but I really do not want to spend $350 for an aftermarket option, and I don't want the kwik-klip kit either. Have I wasted my $94 on this factory DM from a 700PSS? Should I spend another $150 or so to get the BDL hinged floorplate bottom metal instead and try to sell my factory DM setup on the same site that I bought it from?