Wylon,
Difficult to say. The problem is that on surviving blueprints it's impossible to make out whether the firing pin was fluted or not. Also not a lot of documentation from the DWM 1921-1930 era survived (or if it did, it's not available). I believe the general consensus is that the fluted firing pin was a Mauser improvement and that would place it in 1934. Of course, firing pins will break and correctly numbered replacements will be found in pre-1934 guns, without doubt.
|