Youre looking for an AKM trunnion. Bulgy stamped 556 used a 74 trunnion with an akm bullet guide. I bet a WPB would be the best bet
Mars_Ak
Thanks for replying. The trunnion is the last item that I need to complete my build. I have a Bulgarian 5.56 bolt carrier and bolt. Are you saying the WBP trunnion AOA sells would work along with a 5.56 bullet guide? I was under the impression that if a WBP trunnion is used, one would also need to use the WBP bolt carrier and bolt. I'll look into that.
Rico$lavi
Arsenal Bulgaria uses the same bullet guide for 762x39 and 556. They dont use trunnions though since they build milled guns. Slr 106 had a 74 trunnion because they were using surplus 74 parts for a commercial semi auto line which was a fail. Also slr106 had a lightening cut carrier akm style slightly different from the milled sam5 carrier. But all that aside i bet a wpb akm trunnion or even an Apex surplus AKM trunnion would work. I haven't tried it but i dont see why it wouldn't