Originally Posted by sks_hunter
question on turning down the threads...
would there be enough meat remaining there for a pin?
People have remarked on this in the past that it is doable - the problem is that no one has mentioned how thick it is after the lathe job. Chinese trunions are normally 19mm and all the Euro trunions are 22 (23?) mm. So without knowing the measurements, there really are only three choices, as I see them:
- Try a Chinese 19mm trunion. Rivet holes are different.
- If the thread removal leaves the barrel at 22mm, try a Euro-style 22mm trunion.
- If the barrel won't fit the Euro trunion, fabricate a sleeve to attach to the barrel to make it 22mm thick.
how would the now non-threaed barrel mate to the trunion?
The non-threaded barrel would mate to the trunion by a press-fit, like normal stamped receivers are assembled.
You know, we need to talk to someone (at the Firing Line?) who has done this to get the measurements of the barrel after the lathe work is done.