a.k.a. 4140 pre-hardened steel cyllindrical receiver blanks that have had the bolt lug profile wire-EDM cut.
http://www.gunbroker.com/Auction/ViewItem.aspx?Item=453185846
I have the ability to finish something like this, but I don't know if the machine shop supervisor would let me play in his sandbox for something gun related.
http://www.gunbroker.com/Auction/ViewItem.aspx?Item=453185846
![pix056044288.jpg pix056044288.jpg](https://www.northeastshooters.com/xen/data/attachments/57/57083-912299084d4f40718156fde7e7cb9adb.jpg)
I have the ability to finish something like this, but I don't know if the machine shop supervisor would let me play in his sandbox for something gun related.