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Barrel measurement, please


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#1 Kilroy

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Posted 21 July 2015 - 04:38 PM

Looking for a measurement with the barrel installed from the back of the barrel nut to the muzzle. I'm going to be chopping the barrel soon on my Valkyrie Arms repro grease gun and want to make sure I have it exactly right

Thank you.

Edited by Kilroy, 21 July 2015 - 04:39 PM.

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#2 Got Uzi

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Posted 22 July 2015 - 06:50 AM

Unless someone else gets that for you I'll try to measure my barrel tonight when I get home.


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#3 Kilroy

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Posted 26 July 2015 - 04:55 PM

Any luck with that measurement?
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#4 jim c 351

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Posted 26 July 2015 - 06:29 PM

Got uzi,

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#5 emmagee1917

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Posted 27 July 2015 - 12:30 PM

I'll try to remember to get it for you tonight.

Chris


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#6 Got Uzi

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Posted 27 July 2015 - 07:04 PM

I do apologize. I hit post and it did not post. The barrel overall length from feed ramp to muzzle is 8 inches.
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#7 emmagee1917

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Posted 28 July 2015 - 10:53 AM

But as the semi-internals may be different , from the rear of the nut's locking notches to the end of the barrel , following the angle of the dangle is 7-1/4 inches . Along the barrel from the front of the nut proper to the muzzle is 6-1/4 inches . Now the OD of the nut on the FAs is 2-1/4 . You may have to fiddle with the dimentions to get the right look.

Chris


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#8 Kilroy

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Posted 31 July 2015 - 10:26 AM

Thanks for the measurements. I had read on some websites that the barrel length was 6" and then read in FM 23-41 that it was 8". When I measures 8" from the nut proper as you called it 8" looked way too long.

Want to make sure I cut it to the right length the first time.

Thanks again, Hopefully the Form 1 is only three weeks out.
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#9 emmagee1917

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Posted 31 July 2015 - 12:35 PM

As was said above , eight inches is the correct over all length of the barrel proper before the nut is pressed on and pinned . The 9mm barrel sticks further out the nut's backside than the .45 barrel does in the full autos , thus my concern about over all length as I have not examined a semi .45 to see if it's the same as a FA .45 or not .

Chris


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#10 Kilroy

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Posted 06 September 2015 - 01:53 PM

Got the form 1 in!
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#11 Kilroy

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Posted 06 October 2015 - 08:29 AM

Here it is with the barrel chopped down. I threaded the barrel to take a suppressor, so I have the flash hider on there as a 'thread protector'

 

IMG_6265_zpsuhypu0ze.jpg


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#12 emmagee1917

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Posted 06 October 2015 - 01:02 PM

Looks nice . I have one of JACs suppressor barrels for my FAs . Spooky quiet and fun.

Chris


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#13 Kilroy

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Posted 06 October 2015 - 02:49 PM

I have the blue prints to make one of those barrels and one day if like to try and make one but I'd have to deal with Valkyrie again to try and get another barrel.
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#14 Got Uzi

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Posted 07 October 2015 - 05:41 AM

Looks very nice.  

 

I'd be interested to see those blueprints for the suppressor.  Is there a reason you have to go with one of the Valkyrie barrels instead of a GI?


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#15 Mongo

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Posted 07 October 2015 - 09:11 AM

M3A1%20rev1%20-%20sample.jpg


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#16 emmagee1917

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Posted 07 October 2015 - 12:29 PM

Looks very nice.  

 

I'd be interested to see those blueprints for the suppressor.  Is there a reason you have to go with one of the Valkyrie barrels instead of a GI?

 

Yes , the Valkyries are semi auto , not full auto . If you have a " pistol " version you can have a short barrel but no stock . If you have a " rifle " version , you can have the stock , but must have a 16 " barrel . To be able to screw on a short GI barrel would not fly with BATF , therefor the threads are a different size and pitch .

Chris


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#17 Kilroy

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Posted 07 October 2015 - 04:07 PM

I have other plans in a suppressor book from the '70s. It's pretty detailed.
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#18 Got Uzi

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Posted 08 October 2015 - 05:36 AM

I kinda figured that the thread size would be different but I wasn't 100% sure.  

 

I could see myself doing a Form 1 build and making a M3 suppressor.  I want an OSS type suppressor but I don't want to spend what they ask for them.  There is a repo one on GB for $1,500


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#19 Kilroy

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Posted 10 October 2015 - 08:28 AM

Anyone care to take a front sight height measurement for me? I shot this thing the other day and it was shooting very low. On a target about 15 yards away it was hitting about a foot low maybe even more. I figure the front sight is probably too tall.
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#20 jim c 351

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Posted 10 October 2015 - 01:48 PM

Kilroy,

If your not accustomed to firing the M3 you may not be holding it on target as the 2 pound bolt fly's foreword. Shooting the M3, single shot, is similar to firing a flint lock rifle.

The other thing is barrel differences. I have 3 barrels for my M3. One shoots dead on at 25 yards. One shoots high and on shoots left of center.

They were targeted at Guide Lamp before passing inspection, but who knows what took place since.

Bottom line , the front sight height on one gun has little to do with another.

Jim C


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