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Old 01-14-2007, 06:23 PM
jerryd
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Length of Threads needed and How Much Shoulder At the End of the Threads?



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I'm looking at picking up an unthreaded 16 1/2 inch Fluted Barrel; but want to make sure I have enough room between the muzzle and the Flutes for Threading and adequate Diameter near the end of the threads for a shoulder to contact the Suppressor.

Thanks,

Jerry
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Old 01-15-2007, 07:05 PM
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contact the maker of the can for that info, but i thin.400" is the longest you can go?
chris
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Old 01-15-2007, 10:23 PM
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My can "tac 67" uses 1/2x28 1/2 long threads,as well as most 22lr cans. As far as the shoulder that depends on the can. like said above the mfg can answer that
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Old 01-20-2007, 10:27 AM
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The suppressor adaptors that I build are all set up to the same specs as Gem-Tech. 1/2"x28 and are .400" long. The reason for the .4" length is so the barrel won't hit the first baffle when you thread on the suppressor. A lot of the barrels offered on eBay are threaded to .75" and will contact the first baffle long before the suppressor hits the shoulder.
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Old 01-20-2007, 09:05 PM
jerryd
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Thanks...Everyone!

Jerry
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Old 09-16-2008, 06:58 PM
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Quote:
Originally Posted by HotRod9mm View Post
The suppressor adaptors that I build are all set up to the same specs as Gem-Tech. 1/2"x28 and are .400" long. The reason for the .4" length is so the barrel won't hit the first baffle when you thread on the suppressor. A lot of the barrels offered on eBay are threaded to .75" and will contact the first baffle long before the suppressor hits the shoulder.
I think that a lot of those out there that are threading barrels are reading specs from the days when suppressors had wipes and "expansion chambers".

I would be a a bit concerned with them, in that they may be great machinists....but they obviously don't know much about modern suppressors.

0.400" is plenty of thread for modern suppressors.
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