AGP Arms SIG556 Folding Stock

SKU:
AGP-SIG-FOLDINGSTOCK
$140.00
(19 reviews)
Current Stock:
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Here is the AGP push button side folding stock for use on the SIG 556. If your model has the AR style threaded buffer end of the receiver, this kit will fit.  The stock features a removable end cap that allows for storage in the tube section.  You are able to store your proper paperwork, cleaning kit, batteries, etc in this section. 

The kit comes complete with the stock and hinge and all the billet adapters to mate with your lower receiver, anti-rotation plug.

Optional 1/2" or 1" butt pad.

Length of Pull:

No Buttpad - 11.75"

1/2" Buttpad - 12.25"

1" Buttpad - 12.75" 

Will not fit the newer 'Classic' model that had the hinge built into the receiver. If your 556 has a factory folding stock, this product will not work. 

Available in Black

Instructions

Reviews

  • 5
    sig 556 folding stock

    Posted by robert pardue on 27th Dec 2024

    easy to install, works great and looks great

  • 5
    Sig 556 folding stock

    Posted by Robert Knight on 31st Jul 2024

    Very easy to install and mounts very solidly. No wiggle or movement once installed. It looks really good too! I'm glad I bought it.

  • 5
    AGP Arms Sig 556 Folding Stock

    Posted by Bruce Taylor on 6th Feb 2024

    Great product, good quality and perfectly matched to the Sig P556. Very impressed with the build quality and timeliness of the transaction.

  • 5
    Very solid. Close to original.

    Posted by Mckenzie on 20th Jan 2024

    Stock is well made, install takes 5 minutes. Feels close to the 552 european folder in length and overall shouldering. Locks firmly in place. No walk or talk at all. Solid! Definately get it with a larger pad. These rifles all have a tight shouldering as is, but it is still a bit short for my stance. Adding a veritcal grip to the handguard does help for anyone experiencing this. The stock folded does not go far enough to lock up on the handguard "nub" on operators right side. I think the proprietary sig ones do, but it is not a dealbrwaker for me. At this price 5 stars. Fast processing and shipping. Would reccomend.

  • 4
    Sig 556 folding stock

    Posted by PB on 19th Nov 2023

    Great snug fit and very easy to install. Would recommend!

  • 5
    Install tip

    Posted by Gus on 6th Nov 2023

    I’m my excitement to install the stock, I didn’t have the threaded plug and stock properly aligned and managed to cross thread one of the mounting screws. The solution was to simply flip the plug over… and make sure everything is aligned!!!

  • 5
    Great stock at a great price?

    Posted by Gus on 5th Nov 2023

    This stock works great, easy to install, and locks up rock solid. Being the tinkerer that I am, I had to do some minor mods… The locking mechanism was a little sticky. The latch part is aluminum and the bolt that fits into it is polymer. I removed any burrs and polished up the contacting surfaces. To put the stock into the fixed position, I couldn’t just swing the stock into position. I needed to press the release button to get it to lock in place. My solution was to slightly round off the leading edge of the polymer bolt. Now it locks open easily!

  • 5
    AGP Arms SIG556 Folding Stock

    Posted by Steve on 7th Feb 2023

    The AGP Arms SIG556 Folding Stock is the perfect replacement for the M4 telescoping stock that comes with the 1st generation Sig 556 without breaking the bank. After seeing comparable stocks for more than twice as much and usually out of stock, and seeing that AGP is here in Arizona, this was a win-win-win! Installation was easy and it works great. Good, snug fit and operation. Highly recommended!

  • 5
    Recommend.

    Posted by MICHAEL on 4th Nov 2022

    Excellent product, works great. No issue's. Would recommend to a friend if asked.