I won this auction on Gunbroker, but I'm not sure whether I paid too much for it. I won the auction at $1,136.11. Anyway, it seems as though this parts kit doesn't include all the parts needed to build a lower. It seems as though the endplate with the rear sight post and top plate are missing from this parts kit. I did a bit of research, and I can't find these parts online. I guess I could make these parts myself or have someone make them for me, but it would be nice to have original parts. I am able to find a flat bending jig online, but I can't find a drilling jig for M-10/45 flats themselves, since some of the holes are missing.

I found this document, which lists the dimensions of the lower receiver.
https://archive.org/details/COMPLETEmac10-11/MAC10%20Upper%20and%20Lower%20blueprints/mode/2up

Macmachineguns.com specializes in Mac style guns. They have various parts that may be helpful with your parts kit. Granted most of the parts may be for the M11/9 but I'm sure they'll have some M10 parts.

Removed

Please refrain from posting GD-esque nonsense in tech forums - this isn't GD.

I hope it’s a registered flat.

what? Is there such a thing....especially at 1.1k

You got ripped off really bad....those are open bolt/full auto parts. So unless you have a legal open bolt receiver you can't legally use these parts. I know if two huge mac sellers that both shill bid their own items up. What was the item number so I can look and see what it looks like?

You should join this forum and post in the M-10 section to get more info https://www.uzitalk.com/forums/index.php?forums/mac-10-talk.82/


Parts locations I have personally purchased from and have had great experience:

https://www.ftfindustries.com/category/MCWP.html also has a GB page https://www.gunbroker.com/item/983516270

https://www.leetoolandmachine.com/m10-m11.html

https://macmachineguns.com/

https://www.max-11.com/Productpagenew2.php

Whoops

Hmm.