ltdmstr Posted April 5, 2021 Share Posted April 5, 2021 Anyone know if it's possible to thread an AK barrel while still mounted in the receiver and who can do it? And just to clarify, I'm not interested in the Roadkill approach of doing it with a threading die. I want to mount it in a lathe and do it right, but don't want to have to take the whole thing apart (and put it back together). Link to comment Share on other sites More sharing options...
Toolguy Posted April 6, 2021 Share Posted April 6, 2021 Is there a hole through the receiver for the bolt like on an AR? I don't know AK actions. For an AR, I would just put a closely fitting steel bar in the action, clamp the part sticking out of the receiver in the chuck or collet, and put the muzzle on a live center. Then the threads would be concentric and parallel to the bore, regardless of the outside. A lot of barrels on the outside diameter are not concentric to the bore, so you don't want to just put the barrel in the chuck, (assuming you even could). Link to comment Share on other sites More sharing options...
ltdmstr Posted April 6, 2021 Author Share Posted April 6, 2021 (edited) Here's a photo. The barrel, trunnion and receiver are all riveted together. I'm trying to avoid taking them apart. Edited April 6, 2021 by ltdmstr Link to comment Share on other sites More sharing options...
Toolguy Posted April 6, 2021 Share Posted April 6, 2021 Can you clamp the receiver in a 4 jaw chuck with the muzzle on the live center and dial in the chamber end? Can't really tell what the sheet metal looks like from the end or other sides. Link to comment Share on other sites More sharing options...
ltdmstr Posted April 6, 2021 Author Share Posted April 6, 2021 I'll have to look at that and see if it will work. The receiver is just sheet matal, so I'd have to make a block of something to go inside for support, assuming everything else works out. Starting to think it might be easier to just remove the rivets. Shouldn't be that hard to put it back together with a hydraulic press. Link to comment Share on other sites More sharing options...
yigal Posted April 6, 2021 Share Posted April 6, 2021 probably u will need big lathe with ~100mm spindle nose . Link to comment Share on other sites More sharing options...
ltdmstr Posted April 6, 2021 Author Share Posted April 6, 2021 Yes, and I don't have access to anything that big. Looks like I'm going to be taking it apart. Link to comment Share on other sites More sharing options...
yigal Posted April 6, 2021 Share Posted April 6, 2021 12 minutes ago, ltdmstr said: Yes, and I don't have access to anything that big. Looks like I'm going to be taking it apart. saw on you.t. how they done this with jigs by hand. looks very pro. job. Link to comment Share on other sites More sharing options...
ima45dv8 Posted April 6, 2021 Share Posted April 6, 2021 1 hour ago, ltdmstr said: Looks like I'm going to be taking it apart. Please let us know. I'm curious. Link to comment Share on other sites More sharing options...
Bakerjd Posted April 6, 2021 Share Posted April 6, 2021 Very possible. Prasky Gunworks does them that way sometimes. Just depends on the gun or Sean's mood. I think he also does the AK shotguns like that but not 100% sure. Link to comment Share on other sites More sharing options...
ltdmstr Posted April 6, 2021 Author Share Posted April 6, 2021 6 hours ago, Bakerjd said: Very possible. Prasky Gunworks does them that way sometimes. Just depends on the gun or Sean's mood. I think he also does the AK shotguns like that but not 100% sure. Tried the annular cutter and thread die because the barrel is going to be cut down anyway. Results were less than stellar. And that's not going to work because the whole reason for doing this is to pin and weld a muzzle brake for use with a suppressor. If the threads aren't true, that means baffle strikes and other bad stuff. So it's definitely going in a lathe. Just was hoping for an easy solution or someone I could send it to because I have a bunch of other projects in the queue and not enough time as it is. Guess it's just going to have to wait. Link to comment Share on other sites More sharing options...
Bakerjd Posted April 6, 2021 Share Posted April 6, 2021 8 hours ago, ltdmstr said: Tried the annular cutter and thread die because the barrel is going to be cut down anyway. Results were less than stellar. And that's not going to work because the whole reason for doing this is to pin and weld a muzzle brake for use with a suppressor. If the threads aren't true, that means baffle strikes and other bad stuff. So it's definitely going in a lathe. Just was hoping for an easy solution or someone I could send it to because I have a bunch of other projects in the queue and not enough time as it is. Guess it's just going to have to wait. I here ya on too many projects... I'm not sure what Sean's wait times are currently but I'd say send him an email to see. Link to comment Share on other sites More sharing options...
71Commander Posted April 22, 2021 Share Posted April 22, 2021 Doug Jones in MI just did mine. I even let him keep the 14X1 mm LH die. Link to comment Share on other sites More sharing options...
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