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June 14th, 2021, 10:28 PM #1
Cutting threads on unthreaded barrel
I picked up a cheap 16" assembled 5.56 upper a year or so ago at a show. I generally appreciated the bits and bobs and setup, and thought at the time I liked the simplicity of no muzzle device. I have been re-thinking the build and want to add a brake or comp or something without using a clamp-on adapter. The barrel is slightly wider for about 1/2" at the muzzle end, providing adequate 'meat' to simply cut the threads. Sorry, no photo at this time.
I don't have the tools or the talent to do the work myself. Is there anyone in the DelCo area who could do this? I can tear everything down to just the barrel to get the work done more simply, if necessary. I'd like to keep costs under those of a replacement barrel.
What say y'all?
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June 15th, 2021, 07:10 AM #2
Re: Cutting threads on unthreaded barrel
Milford, PA. We do these all the time for a class 3 dealer near by who sells suppressors. www.jcbgunsmith.com
JC Blauvelt Gunsmith,Inc. JCBgunsmith.com
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June 15th, 2021, 09:44 AM #3
Re: Cutting threads on unthreaded barrel
CDI in Chalfont can do that too but I do not know how much work he is doing right now. Sean is a member here.
Gender confusion is a mental illness
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June 15th, 2021, 10:13 AM #4Grand Member
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Re: Cutting threads on unthreaded barrel
For the gun smiths.... any reason he can't just buy the die and DIY it?
American by BIRTH, Infidel by CHOICE
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June 15th, 2021, 10:34 AM #5Grand Member
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June 15th, 2021, 11:32 AM #6
Re: Cutting threads on unthreaded barrel
No gunsmith here, just an old man who's been around the block a couple of times. I see a couple of possible reason to not do that #1 If the barrel was the right diameter for a standard threading die to fit on it, the risk is there to not have it start straight and create a disaster. #2 I don't think a gunsmith would use a die on it, I expect that they would turn the threads in on a lathe.
Gender confusion is a mental illness
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June 15th, 2021, 11:45 AM #7
Re: Cutting threads on unthreaded barrel
Not a good idea. If the threads are not done correctly it could spell disaster for the muzzle device. The threads for a muzzle device, be it a flash hider, muzzle brake or suppressor (especially a suppressor) should be perfectly perpendicular and concentric to the bore so that everything is dead straight through. Gunsmiths who thread barrels do them on a lathe to achieve this.
Ron USAF Ret E-8 FFL01/SOT3 NRA Benefactor Member
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June 15th, 2021, 05:30 PM #8
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June 15th, 2021, 05:57 PM #9
Re: Cutting threads on unthreaded barrel
What is the cost of having it turned down vs buying a second barrel and having a friend with a wrench and a vise loan you their time/tools?
-ZachMy feedback thread: https://forum.pafoa.org/showthread.php?t=315316
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June 15th, 2021, 07:23 PM #10
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