I have a milled Chinese from Frontier, but it's a mutt, no original stock, mag or bayo.
I'd like a full matching example with the Chinese characters on the receiver.
I think they meant milled trigger group as opposed to the stamped trigger group. As has been mentioned, other than the few stamped and even fewer cast receiver experimental models which are rare, all the receivers are milled. They claim 60's manufacture which would be milled trigger groups. They switched to stamped trigger groups for the later production, circa 70's and later.




















































