If I may proffer an opinion.

Above was a remark about greesing the bolt locking lugs.

If a DGR is being used for that purpose,rather than at a range, then personaly I would before a trip degrease the working parts a lubricate with a dry Molydisuphate powder of powderd graphite.

Grease in these places can pick up grit and dust enough to prevent closing of the bolt on a round especially on the bolt face or chamber if it migrates in the heat. For the number of rounds that will be fired on an overseas trip there will be no wear on the lugs by running the gun dry and it will be much easier to keep the shit out of there is nothing for it to cling to.

The same thing applies to trigger sears, grit here especially on fine aftermarket triggers can stop the sear catching. There is a reason that Mauser origional triggers are made of re-cycled girders :-)

Regards