Butchered Sig 556? Looking for info

[daveygts]

Hello everyone so I was able to purchase a sig 556 with #JS serial number and I?m looking for a gunsmith. the previous owner that had this rifle kind of butchered it a little bit. Wanted to see if I could find somewhere that would change the butt stock for me? Has a AR style butt stock but it?s very wiggly. Doesn?t really seem like it was fitted on there properly just kind of looking for a place so they can take them once a look over it maybe give me an option on replacing the butt stock with a better one? Everything else looks pretty decent on the rifle shoot pretty true, but the butt stock definitely has to go. Any suggestions would be greatly appreciated anywhere in SoCal or surrounding areas someone that?s kinda knowledgeable about this raffle would be preferred as well. This does not have a buffer tube/spring like typical AR


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[ar15barrels]

If it uses a typical AR carbine buffer tube design, the first thing to do is try some of the stocks from your other rifles and see what fits better.
Then order one of those.

It could be that you have a mismatch of commercial and milspec parts.
Here are the dimensions so you can measure the tube diameter and the stock hole diameter and determine if that's the case:

If you had a commercial spec stock on a milspec tube, the fit will be excessively sloppy.

If it does not use a standard AR stock dimensions as such that standard AR stocks would fit, then you are looking at shimming the stock you have to tighten it up.

[homelessdude]

He said it doesn't have a buffer tube. I'm not a legal eagle but if it was me I would delete the pic or the thread until I found out how the assault weapon laws may / or may not come into play. JMO

[Tim padilla]

This guy doesn’t need to delete his pic.If you look he has one of those stripper clip type fix mags in the Sig 556 . The upper sleeve on the fix mag would be in the down position if it was topped off with ammo .
I have a Few rifles with this type of mag and your compliant 100% in CA with this feeding device, get to keep all the naughty bits on your black rifle.

[sigstroker]

Sounds like the hinge thing is loose. I don't know what the 556 hinge lockup is like. The MCX and my old Daewoo had a lockup similar to the FAL Para, with angled surfaces so that as it wears it maintains a tight lockup.

[1911su16b870]

Sig 556 operates like an AK, the lower is unserialized, I like the old 551/552 style folders on these rifles.

[ar15barrels]

He said it doesn't have a buffer tube.

Here is what he said:

Has a AR style butt stock but it?s very wiggly.

This does not have a buffer tube/spring like typical AR

Picture clearly shows an AR carbine stock which would fit on to a buffer tube shaped part of the gun.
The gun does not USE a standard AR buffer/spring for function so perhaps the part that the AR buttstock slides on to is solid or has a different sized hole in the middle but none of that matters to the stock fit.

What matters for stock fit is the outside dimensions of the buffer tube shaped part and that's why I gave a drawing with the dimensions of the OUTSIDE of the carbine buffer tube shaped part so he could measure his and compare.

[scout II]

I like my factory side-folding stock on my Sig 522 rifle. You can always get a factory original butt stock and install it.

https://www.gatewoodsupplyco.com/SIG-551-552-553-556-Folding-Stock--Black_p_5235.html

Or here is an aftermarket side-folder set up that is close to original, sort of.

https://agparms.com/agp-arms-sig556-folding-stock/

[homelessdude]

Last sentence in his OP says it does not have a buffer tube / spring like a typical AR.

[ar15barrels]

It appears that he has something like one of these:

https://ddles.com/shop/ols/products/sig-stock-adapter

And then an AR carbine buffer tube is installed into it and then the Magpul stock is installed.
Good chance he has a milspec tube and a commercial stock.

[smoothy8500]

kind of butchered it a little bit. [/IMG]

What was butchered? Doesn't look butchered. Maybe come back and add a little detail if it's the adapter that's loose/wiggly or a mismatch between the milspec/commercial tube and stock?