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Author Topic: New twist to the "O" ring trick  (Read 5821 times)

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Offline trotterlg

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New twist to the "O" ring trick
« on: February 22, 2008, 03:21:28 PM »
Last week while playing with the forearm on the 30 carbine barrel I discovered a little trick to make the fitting of the forearm consistant.  With the O ring in place, I put a very short 1/4 20 set screw in the forearm lug hole.  By adjusting it in and out you can make the forearm screw bottom out on it at any amount of O ring compression you like.  Then just some blue locktight on it and every time you put the forearm on and tighten it down it will have exactly the same amount of ring compression and pressure on the barrel.  Larry
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Offline McLernon

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Re: New twist to the "O" ring trick
« Reply #1 on: February 22, 2008, 03:24:27 PM »
Clever idea ;)

Mc
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Offline quickdtoo

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Re: New twist to the "O" ring trick
« Reply #2 on: February 22, 2008, 03:32:59 PM »
That's a great idea Larry, it's now in the FAQs!!  ;)

thx,

Tim
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Offline burntmuch

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Re: New twist to the "O" ring trick
« Reply #3 on: February 22, 2008, 05:52:22 PM »
Whats the chance you can take a picture of that. It must be late or Im not as sharp as Id like to think I am, but I cant picture it.
 
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Offline trotterlg

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Re: New twist to the "O" ring trick
« Reply #4 on: February 22, 2008, 06:05:55 PM »
This is a setscrew positioned as a stop in a forearm lug.  Just set it to the proper depth for the crush you want, when the forearm screw bottoms out you are set, no guess work, the same tightness every time.  Larry

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Offline burntmuch

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Re: New twist to the "O" ring trick
« Reply #5 on: February 22, 2008, 06:10:09 PM »
Thank you sir. Makes perfect sense. Guess Im going to the hardware store tomarrow. Thanks again
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Offline bluebayou

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Re: New twist to the "O" ring trick
« Reply #6 on: February 22, 2008, 06:33:40 PM »
Pretty clever idea.
I'll be keeping my eye on you.............
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Offline handirifle

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Re: New twist to the "O" ring trick
« Reply #7 on: February 22, 2008, 08:26:47 PM »
very clever.
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Offline EVOC ONE

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Re: New twist to the "O" ring trick
« Reply #8 on: February 22, 2008, 11:50:57 PM »
Great idea!  Thanks Larry.  ;)
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Offline lonewolf5348

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Re: New twist to the "O" ring trick
« Reply #9 on: February 23, 2008, 03:12:37 AM »
thread size?
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Offline JerryKo

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Re: New twist to the "O" ring trick
« Reply #10 on: February 23, 2008, 03:27:55 AM »
Larry, that is a superb idea! Thanks for sharing.

Lonewolf5348,  from the FAQ's

Quote
The forend hanger screw on current production firearms is a ¼"-20x½" flathead machine screw.

JerryKo
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Offline Ranger J

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Re: New twist to the "O" ring trick
« Reply #11 on: February 23, 2008, 04:46:58 AM »
Brilliant!

RJ
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Offline Batchief909

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Re: New twist to the "O" ring trick
« Reply #12 on: February 23, 2008, 05:07:16 AM »
Tim shoulda figured that out a long time ago.... ;D ;D (jk) ;)

GREAT IDEA!! 8)
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Offline quickdtoo

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Re: New twist to the "O" ring trick
« Reply #13 on: February 23, 2008, 05:46:06 AM »
Tim shoulda done a lot of things a long time ago!!

Tim
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Offline fish280

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Re: New twist to the "O" ring trick
« Reply #14 on: February 23, 2008, 06:36:53 AM »
excellent idea!
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Offline bearbeater

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Re: New twist to the "O" ring trick
« Reply #15 on: February 23, 2008, 11:12:35 AM »

Hey
That is why I hang here
Thank for the trick
BB
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Offline burntmuch

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Re: New twist to the "O" ring trick
« Reply #16 on: February 23, 2008, 12:10:18 PM »
11 cents at the hardware store, bought 4 today worth a try
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Offline Foggy

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Re: New twist to the "O" ring trick
« Reply #17 on: February 23, 2008, 12:32:25 PM »
Great fix  I'll be doing that
Foggy
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Offline Lucky Joe

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Re: New twist to the "O" ring trick
« Reply #18 on: February 23, 2008, 03:13:04 PM »
Great tip, you "really can learn something every day".
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