I am working on a GEW 98 that has had one of these installed but didn't work. It turned out to be that the bolt shroud needed to go one more revolution on the bolt body so that when the rifle was cocked, the safety could slip in front of the cocking piece. So it works but I wonder about the fact that you cannot remove the bolt with the safety engaged. If you put the safety on and lift the bolt handle to withdraw it, it immediately drops the safety to the fire position. This makes it difficult to disassemble the bolt the way Mauser intended it to be done and also does not seem to be correct. I am also surprised that the safety can be pulled out of the bolt shroud with just a casual tug on the part and this appears to be as designed. Does anybody have any experience with these and is this the way they are supposed to work? Thanks for your replies!