D-Date Police Questions,,,

Hi, my Erfurt from 1918 has also the RC-stamp on the toggle. there's a lot said to the meaning of it. only this:

RC translated means: Revisions-Commission

I have a photo of an artillery-DWM which original 8" barrel was shortened in 1920! ic could be the original barrel.

The RC-stamp was only used on Erfurt-lugers. in 1916 both companies got the order to fix the cut in both variations (P o8 and the long version). but only Erfurt did it till 1918, and they only produced long lugers only till 1915. DWM manufactured both variations the short one without and the long with the cut. if i'm wrong, please correct me. Dieter