I guess I gut lucky. My Crane stock was in pretty much perfect condition, it came still new in the bag. The only blemishes seem to be the kind of dried out look apparent on some newly molded plastics, which shine up nicely with a little silicon lube or armorall (use the matte, not the glossy). I also lucked out cause the seller (who sold multiple units) advertised the heinous price which included the buffer, tube, and spring - none of which they come with so he had to send me a brand new Colt tube, buffer, and spring pack.
It will not fit on a Bushy/RRA/Whoever's 6 position tube, but could be filed and modified to I'm pretty sure, which sounds like what happened to the unit Lord Stoner's unit...