 1Andy2
Grand Wizard of the Human Supremacist Movement
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Joined: Jul 2004  TX, USA
 Posts: 38908 Feedback: 100% (67) |
Posted: 4/14/2012 1:11:19 PM
THE IMAGE ABOVE IS A PAID ADVERTISEMENT I've built a couple of 47s, but nothing with a newly manufactured barrel. Just original barrels, back before the ATF became dicks about demilling barrels. |
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Posted: 4/14/2012 2:36:49 PM
Probably not too likely.
What you'll probably have to do is re-head space and drill for a larger pin. |
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Posted: 4/19/2012 8:49:04 AM
Do you mean the barrel pin, or the handguard retainer pin?
Virgin barrels are the best as you can space everything to tight tolerances and have no slop in the handguard or other parts. They do require more work though. Otherwise the factory barrels with slots cut are usually pretty damn close to perfect, especially when used with that country's parts. It may headspace just fine or you may have to drill the barrel pin slightly oversize in the trunnion. |
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jdoming728
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Joined: Aug 2010 NM, USA
Posts: 1200 Feedback: 100% (1) Link To This Post |
Posted: 4/19/2012 10:51:14 AM
Most of the ones I have done Ive been lucky and only had to lap the bolt because its been tight but more than likely you will have to red rill with a larger pin to get the headspace perfect... I have only had 4 of the more than a dozen I have helped build be perfect on headspace and the non matching kits I have built or help with have been tight..If its like .005 or close then I lap the bolt if its larger then I usually move the barrel and re drill to the next larger pin and install it....Good luck post your results...
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Gunplumber
Master Gunsmith
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Joined: Jul 2002 AZ, USA
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Posted: 4/19/2012 1:04:15 PM
[Last Edit: 4/23/2012 9:48:24 AM by Gunplumber]
"Virgin barrel" and "already slotted for the barrel pin" don't usually go together. A virgin barrel should not be slotted at all.
If there are no components on the barrel, why not just hard-solder the slot and then drill it to the correct size and location? Oversizing the barrel pin is for times when you want to make a minor correction without removing the rear sight block. I don't see the point in making it a non-standard pin. |
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Posted: 4/20/2012 6:33:52 AM
Originally Posted By Gunplumber:
Virgin barrel and already slotted for the barrel pin don't usually go together. If there are no components on the barrel, why not just hard-solder the slot and then drill it to the correct size and location? Oversizing the barrel pin is for times when you want to make a minor correction without removing the rear sight block. I don't see the point in making it a non-standard pin. Do you have a type of solder you recommend for that? |
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Gunplumber
Master Gunsmith
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Joined: Jul 2002 AZ, USA
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Posted: 4/20/2012 8:48:28 AM
I Use Silvaloy 45%.
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1Andy2
Grand Wizard of the Human Supremacist Movement
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Joined: Jul 2004 TX, USA
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Posted: 4/22/2012 2:01:16 PM
Neat.
So do you install the barrel to the position you want it, and then use the trunion itself as a drill guide for drilling the retaining pin slot in the barrel? |
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AEnemaBay
2111 - USMC
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Joined: Jan 2007  UZB
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Posted: 4/22/2012 4:04:25 PM
Originally Posted By 1Andy2:
Neat. So do you install the barrel to the position you want it, and then use the trunion itself as a drill guide for drilling the retaining pin slot in the barrel? Yes. |
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