AR-15 Reiever Ideas

[Gunnerlove]

There is no MILSPEC for parts. Mililtary standards typically apply to raw materials, processes and finished systems.

As long as receivers are dimensionally correct, there is not much difference between them. Some minor details such as logos, that's about it. Buy whatever you can find at a good price.

What they are made from and how they are made is all part of the spec. If you are making a batch of weapons parts you will know what shift of what mill made the steel (MILCERTS) and there will be a pile of test/inspection forms following each batch. It can go so far as to tell you what individual machined and who heat treated a batch of firing pins. And every pin is a finished part.

But what do I know.