The topic of parts interchangeability for DSM and ES rifles comes up fairly often. While this will not be an exhaustive list of all possibilities, my hope is to cover the basics so that most have a resource to reference. The first caveat is that Mauser 22's are not like any other Mauser, in regards to interchangeability. Often parts are not interchangeable between rifles, even of the same makers. Add to that a wide variety of tolerances, types, variations, and manufacturing processes and you have a myriad of issues that may cause problems.
The first example is the earliest variant I have. This is a traditional "early" rifle, with a low extractor position, and very little case support, and a LARGE extractor face.
The second example is still an "early" rifle, with a low extractor position, but they have added case support, and it still has a LARGE extractor face.
The third example is "late" rifle, with a high extractor position, added case support, and a LARGE extractor face.
The fourth example is a "late" rifle, with a high extractor position, added case support, and now, a NARROW extractor face.
The fifth example is a "late" rifle, with a high extractor position, this is the final version with the most case support, which also saves manufacturing time, and a narrow extractor face.
Of note is also the variety of extractor shapes, and dimensions.
In regards to the extractor cut, these can vary WIDELY depending on type. The top is a ES 340b, 154798, which would have had a "4th" or possibly a "5th" type bolt. The bottom is a Simson DSM which would have had a "1st" or "2nd". A Waffenstadt Suhl rifle has an equally massive extractor cut.
There are two variations of Ejectors in DSM and ES Mauser small bore rifles. These two variants utilize two different cuts found in the bolt, what has been referred to as a 14mm and 8mm, which refers to the length of the relief cut. This is important because a rifle that is set up with an ejector for a bolt utilizing a 14mm cut will not eject if a bolt utilizing an 8mm cut is used.
If a bolt with a 8mm relief cut is used on a ejector designed to be used with a 14mm relief cut, the ejector will not eject the spent cases. The below image is of a 8mm bolt with a 14mm ejector.
A Small and Large Safety
The small safeties were prone to breaking and were at some point enlarged.
Small safety
Small safety - notice the crack starting on the part
Large safety
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