Petroleum 1 Posted August 14, 2018 Report Share Posted August 14, 2018 These markings are on my MP43 the COS is a Haenel marking but what is the F looking marking?? Tia Vin Link to comment Share on other sites More sharing options...
taeelec Posted August 14, 2018 Report Share Posted August 14, 2018 (edited) The COS stamp is for Merz-Werke which was the sub contractor that made the receiver on your MP43 ( Merz-Werke made a lot of the receivers for the MP43/44/ STG44). The F stamp is actually a partial/ light strike stamp. If it had been stamped completely it would be FXO which was the code for Haenel. The 'Eagle 37' stamp is the control stamp assigned by the Waffenamt for Haenel ( and JP Sauer ). I love all the codes the Germans used for their smalls arms. It makes collecting interesting. Todd in Oregon Edited August 15, 2018 by taeelec Link to comment Share on other sites More sharing options...
Petroleum 1 Posted August 14, 2018 Author Report Share Posted August 14, 2018 Ty Todd excellent info Link to comment Share on other sites More sharing options...
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