SIGforum
Barrel cutting

This topic can be found at:
https://sigforum.com/eve/forums/a/tpc/f/630601935/m/2360001334

November 12, 2017, 09:29 PM
creslin
Barrel cutting
So a while back I filed a form 1 to SBR my 556xi.
Months went by and I got approval (yay).
However...
I can't find anywhere that sells a wrench to take the barrel off so I can have it cut.
I considered simply sending the whole damn upper in... but with the 556xi, the upper is the serialized part. So if I send in the whole thing as-is... the company that does the cutting will be the ones actually (legally) creating the SBR.
Found a place or two that say I can send it in to them AFTER I get the barrel chopped off some (ie. not a pretty cut - just a ragged cut so it's shorter than 16") - then they would finish it... thread it... etc..

So I took a saws-all to it with a heavy duty metal bit.
It scratched the finish.
That's it.
It didn't even begin to cut the actual metal.

So.. anyone have suggestions for getting this barrel chopped down?





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November 12, 2017, 10:14 PM
djpaintles
Cutting down a chrome lined barrel is not something to leave to anyone that doesn't know exactly what they are doing. I saw on another forum that "ADCO" had the proper tooling for 556 barrel work. You might do a google search around to see if there are others with 556 experience and choose the best one for you.

Don't ruin a good rifle by rushing into a barrel chop!!


Remember, this is all supposed to be for fun...................
November 13, 2017, 11:14 AM
myrottiety
Did a quick search. Maybe one of these guys:
http://www.pendergraftgunworks.com/

OR

AD Custom: Arnold Dew 910-308-0680




Train how you intend to Fight

Remember - Training is not sparring. Sparring is not fighting. Fighting is not combat.
November 13, 2017, 05:26 PM
hrcjon
I wouldn't worry about the chrome given what you are doing, its a nonissue.
I'm not sure what tools you have access to but my preferred choices would be:
metal cutting cut off saw
metal cutting bandsaw
correct media on a portable cutoff tool (if your going to buy a tool this will be the cheapest choice)
I have no idea why your sawsall won't do it, but I'm going to say bad blade choice. Try something else. if that's the only tool choice you have I'll try cutting a barrel to see what works but I don't have any personal experience using one for that. This is not hardened steel. Heck for what you want just plasma cutting it would be fine.
In any case if you don't have any other choices almost any local metal shop will.
j


“So in war, the way is to avoid what is strong, and strike at what is weak.”
November 13, 2017, 07:18 PM
Tommydogg
5 inch grinder and a bunch of cut off wheels would do it.


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November 13, 2017, 08:42 PM
hrcjon
any size will do (if the op needs to buy one, suggest 4.5) and you won't need more than one cutoff wheel.


“So in war, the way is to avoid what is strong, and strike at what is weak.”
November 13, 2017, 11:59 PM
barndg00
I sent mine to ADCO, quality work, had it I ingraved before they did it. No issues.
November 14, 2017, 02:26 PM
Exodus
Tromix sells a wrench for the 556xi barrel nut:

http://www.tromix.com/sig-sauer-556xi-parts.html
November 14, 2017, 10:21 PM
creslin
quote:
Originally posted by Exodus:
Tromix sells a wrench for the 556xi barrel nut:

http://www.tromix.com/sig-sauer-556xi-parts.html


No they do not.
I called them up to try and order it... they stopped carrying them a year or two ago.
That page is old and they simply have not deleted it yet.

Thanks all for the suggestions - I'll likely try the grinder route Smile





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November 16, 2017, 08:25 AM
blusmoke
ADCO is gtg
Communication is through email only

Write them and ask

I use them without hesitation
Turn around is fast

If they get your upper disassembled that would be the time to reconsider a different assembly that takes srd tools
December 30, 2017, 10:46 PM
creslin
Ok so got an update on this for anyone who cares.

Friend gave me a dremel for xmas.

I put the cutting bit on it and attacked the barrel.
I can't say that it went through it like butter...
but holy shit the barrel is now 2 inches shorter!

I can now (finally) send this thing in to get properly chopped/threaded.





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