That would most likely be a Yugoslavian M48BO. The 1 in a square is a Zastava marking. Heym did not make their intermediate actions, rather they purchased them from Zastava. The Eagle over N (Nitro) marking is German and added when Heym built the rifles on the Zastava made action.
That I did not know. Thanks for the info, always assumed Heyms were Heyms and Zastava's were not.
Just parted with a Herter's XK3 that was marked
Made in Yugoslavia and had the floor plate release in the hasp. Have another in route with the lever release as pictured on you "Heym" actions. Though the inbound one has the Heym style bolt release, different than those pictured.
Kent
