Black beard
Plastic
- Joined
- Feb 1, 2017
I'm in the proses of building a 20 mm rifle im having pacnor make the barrel thought. I was going to have m2hb threads on the barrel so I could take it off.8tpi 60 degree pitch. I'm machining the bolt and barrel extension and receiver im going with bill holms design but making every thing larger what do you think of the threads I'm using for ease of removal any suggestion's