Guy wants to trade me this "chinese ak-47 parts kit" The muzzle break.. kinda 74 lookin', no? any easy way to tell if it's 5.54 and not 7.62? He doesn't seem to know uch about it.. said he has had it laying around for 20 years. Think you could identify it, and make a fair call on value? He claims the same set is selling for $600 on gun broker currently. Am I nuts to trade a well used mossberg 590a1 for this pile of parts? Wanted to do a real build after my saiga conversion. I'd need to buy a receiver, gas tube, and furniture.. anything else appear to be missing from the kit?