[ARCHIVED THREAD] - Thread Postban Barrel, need spec/blueprint

Posted: 3/2/2005 4:46:10 PM EDT

Think about threading a postban barrel. Correct me if I'm wrong, I need to turn the first 0.65" of the barrel down to .5" in diameter then thread with right hand 1/2x28 die, right?. Do I need to remove the barrel extension before I turn down the barrel? Any precise specifications, blueprint or instructions would be much appreciated.

Posted: 3/2/2005 4:51:40 PM EDT

[#1]

The first thing I must say is:

DO NOT TOUCH THE BARREL EXTENSION!!!!

The most you would need to do is remove the barrel from the receiver, assuming you are going to use a lathe to turn down the barrel. The barrel should be turned down to 0.496" for 5/8", then threaded. Some companies undercut the last 1/8" or so (nearest the front sight), then thread the remaining 1/2".

Posted: 3/2/2005 5:55:50 PM EDT

[#2]

Thank you thank you thank you!!!

Posted: 3/2/2005 7:52:48 PM EDT

[#3]

You are going to have a hard time getting a die up close enough to the shoulder to give you full threads. If you can lathe-turn the barrel, it really isn't hard to cut the threads with a single-point tool. Especially if you do the undercut first.

Posted: 3/3/2005 5:17:02 AM EDT

[#4]

can the barrel be threaded without remove it from the upper?

Posted: 3/3/2005 5:24:25 AM EDT

[#5]

Quoted:
can the barrel be threaded without remove it from the upper?

Yes. This is a guess, but I think that the people who do it this way are using a CNC mill and single point cutting or die cutting the threads that way.

[ARCHIVED THREAD] - Thread Postban Barrel, need spec/blueprint

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[ARCHIVED THREAD] - Thread Postban Barrel, need spec/blueprint

[ARCHIVED THREAD] - Thread Postban Barrel, need spec/blueprint