I dont think that would work, but i'm not sure. Ask the guys at ar15.com in the ak47 general discussion forum. I know you can thread the barrel and install a plunger pin in the FSB. It would be 14x1. Thats my plan for my sar-1. The bulgarian FSB has 24mm threads. I doubt the pin spacing is the same, and i think 74 barrels are thinner than AKM barrels.One thing I would like to do is put a good 74-style muzzle brake on it. I could thread the barrel myself and put a Krebs brake on it, but I was wondering if anyone else had any ideas about that kind of thing. Maybe a Bulgarian threaded front sight block and brake? Is that possible? Not sure how the pinning works...
In either case, most of those guys claim 74 style brakes dont do much for the 7.62x39 round. The expansion chamber isnt big enough or something. I'm probably going to do a slant brake since thats whats accurate for an AKM.