Not hard at all to understand, you're just missing an important point about the barrels. You're confusing the dates on the TUBES as being directly related to the GUN type; they aren't. Or at least, once the "gun" in question was no longer ONLY the MG-34.fab wrote:that's means the early MG42 barrel were dated as were the MG34 ones
so how is it possible to have a undated old patent one ???
and how explain a 1940 dated MG42 barrel ???
Sometime live is difficult to understand
ALL MG-39/41 "barrels" and a huge number of early MG-42 "barrels" were made from barrel TUBES that originally started life as MG-34 barrels. They re-contoured and profiled the TUBE as needed, attached a new style extension on and ran them in the new design guns. It's really that simple.
I showed in an earlier thread, in exacting detail the proof of this practice. I showed a tube made for a MG-34 that is now attached to an MG-39/41 extension, contoured and mated for THAT gun. Yet, the TUBE bears numerous markings, proofs, manufacturer, and subcontractor markings that ONLY existed at the time of early MG-34 production. Simply put, you need to understand that barrel TUBES were considered only a COMPONENT part of the whole barrel assembly and were treated as such.....used where and when needed.