What is a Sauer receiver that has 7 lugs on the bolt? What type rifle are they?
Butch

Most likely a 202
6 lugs at the front locking directly into the barrel, and 1 safetylug (the bolthandel) at the rear of the bolt, to prevent the bolt from flying, if the frontlug arangement fails. This will force the barrel to pop out instead of the bolt going balistic.
Werry nice rifles indead. Only negativ imho. is the safetyrelease inside the triggerguard, just in front of the trigger.(you can with 1 single movement release the safety and pull the trigger)