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jim_trent said: "Most of the 80% receiver manufacturers have exited the business ..."

This is news to me. Are you talking about the businesses who were renting time on their CNC machines to finish 80% receivers to 100%, or are you talking about people who manufacture shaped hunks of aluminum alloy with some holes in them?

"Most of the 80% receiver manufacturers who were targeted by the BATF, raided, and prosecuted in court have exited the business."

Fixed it for you. Many more have taken their place, but it is probably only time until they are raided, too.

BTW, having "build parties" is what tripped up a few of them. And, having a CNC machine programmed to machine it, leaving you only having to push the "on" button was another one.

A previous injection moulded plastic lower manufacturer offered one that was complete except for enlarging the undersized existing holes in the sides. Since it took VERY little time to injection mould a lower, just enlarging the holes was truly 20% of the work time. They are no longer in business. My guess is that the latest one was just too easy to complete.