The
MG45 uses a Roller Delayed Blowback developed in 1944 by
Metall- und Lackwarenfabrik Johannes Großfuß.
The
STG45(M) uses a Roller Delayed Blowback developed in 1944 by
Mauser.
The two Roller Delayed Blowback mechenisms were developed by diferent manufactures in 1944 and have diferent mechanical operational geometries,is there a relation between the two?
"Nach den 1944 eingeführten Materialsparmaßnahmen wurde eine vereinfachte Version des MG 42 gefordert. Die Firma Mauser entwickelte daraufhin eine vereinfachte Variante des MG 42, während zeitgleich die Firma Großfuß das MG 42V oder MG 45 mit einem masseunterstützten Rollenverschluss konstruierte. Diese Waffe wurde bereits im Juni 1944 erprobt. Die weitere Entwicklung zog sich jedoch in die Länge, so dass bei Kriegsende nur zehn Waffen gefertigt waren."
"According to the 1944 austerity measures introduced material is a simplified version of the MG 42 was required. The Mauser company then developed a simplified version of the MG 42 while at the same time the company Puvel the MG MG 42V or 45 designed with a weight-assisted closure role. This weapon has been tested in June 1944. However, further development took in the length so that when the war ended only ten weapons were manufactured."
"...material shortages of the Third Reich led to the development of a newer version of the MG 42, the MG 45 (or MG 42V). This had a different operation mechanism that used delayed blowback as opposed to roller locking."
Großfuß had already developed the Roller Lock MG42 and then the simplified Roller Delayed Blowback MG 45/42V,but history credits
Dr. Karl Maier ,from Mauser,as the Inventor/creator of the Roller Delayed Blowback out of the Roller Locked Gerät 03,and later on used in the Roller Delayed Blowback
Gerät 06(H)/STG 45(M)
"What Maier realized was happening during these out-of-spec firings was that the rollers were resting on the angled sides of the wedge when discharged, instead of on the main parallel sides of the block. As a result, the force pushing back on the bolt would slide the rollers in by itself, without and input from the piston needed. This sequence of events kept rolling around in Maier’s head while he worked, and by the middle of January 1944 he had conceptualized a brand new action, which would be simple and cheaper still than the roller lock.
If Dr. Karl Maier came up with the idea for the Roller Delayed Blowback from the Gerät 03,why did Mauser started with the Roller Locked Gerät 06 and not just with the Roller Delaysed Blowback Gerät 06(M)?