Threaded Barrel-end Design Standard?

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[ARCHIVED THREAD] - Threaded Barrel-end Design Standard?

Posted: 8/30/2004 4:22:10 AM EDT

Do the dimensions of the AR barrel threads--the design standard--exist as public data? If so, does anyone know of a website?

Thanks,
John.

Posted: 8/30/2004 2:54:38 PM EDT

[#1]

The barrel is turned down to 1/2" and threaded 1/2"-28. The only thing I'm not positive is how much is actually threaded. It's about 1/2", but that isn't exact.

-Troy

Posted: 8/31/2004 3:36:54 AM EDT

[#2]

Quoted:
The barrel is turned down to 1/2" and threaded 1/2"-28. The only thing I'm not positive is how much is actually threaded. It's about 1/2", but that isn't exact.

-Troy

Thanks, Troy.

I'm hoping to get a drawing. I'm looking for dimensions and tolerances...the perpendicularity of the washer seat with the bore; straightness and position of the threads; etc..

Posted: 8/31/2004 3:44:37 AM EDT

[#3]

Lots of info here on-site: www.ar15.com/content/manuals/, perhaps what your looking for is there.

Mike

Posted: 8/31/2004 8:21:48 AM EDT

[#4]

injun,

I'm currently fighting with my scanner to burn you a copy of the print. No dice yet. I'll keep trying.

Posted: 8/31/2004 10:04:27 AM EDT

[#5]

I too am looking for the same information.

Posted: 8/31/2004 11:19:38 AM EDT

[#6]

Most barrels are threaded .605 from the muzzle back with a .020undercut at the end of the threads for an overall of .625

Posted: 8/31/2004 11:57:02 AM EDT

[#7]

Thanks!

Posted: 8/31/2004 12:36:55 PM EDT

[#8]

I´ve got drawings for the NM barrel. There is dimensions for the threads, barrel extension and flash suppressor. Anyone interested send me an email.

MN

Posted: 8/31/2004 6:13:28 PM EDT

[#9]

Posted: 8/31/2004 10:19:52 PM EDT

[#10]

That print doesn't quite jibe with the GI print in at least one readily visible area. The section under the handguards should be slightly tapered. .64 is close to the mean OD.

Posted: 8/31/2004 11:46:44 PM EDT

[#11]

Tweak and other interested,

Drawings sent.

MN

Posted: 9/1/2004 2:35:34 AM EDT

[#12]

OK, finally got my scanner working again. Never buy a Plustek scanner, the software sucks. Finally had to edit the .ini file for their "action manager" to get it to load. POS.

Here's the pertinent portion of the GI print. Apologies for the size, wanted to keep the writing legible.

I know the print refers to "view" such and such but it's a two page print and I have both pages and those detailed views are not shown. Dunno if they're left over from older versions or maybe refer to another non consecutive print.

M4,

Thanks for the prints, they look good.

Posted: 9/1/2004 3:19:15 AM EDT

[#13]

Tweak,

Thank you

[ARCHIVED THREAD] - Threaded Barrel-end Design Standard?

AR-15 » Rifles, Uppers, Lowers, Barrels, and more

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