the boldt handle has to be bent so it turns down like a normal bolt.....saftey has to be changed to a diffrent saftey.....and the reciever has to be drilled and tapped......i got it all done for 50.....plus bases and rings.....but i think something got screwd up....the gunsmith forgot about it and took a long time and didnt charge me for the work or something....i dont know....i was like 13......im only 17 now but me and the mauser been through alot......i cant remember what happend wit hthat but i got it done cheap.....