Sylvan Arms AR-15 Folding Stock Adapter - Gen 3

Manufactured by Sylvan Arms
Manufactured by Sylvan Arms
8 Reviews

In Stock

Standard orders will be shipped within the same business day. FFL orders will ship within 2 business days or less as long as we have the information for the transfer destination. Priority shipping methods like Overnight Delivery, Air Delivery, 2nd Day Delivery, or 3 Day delivery do not include Saturday or Sunday as delivery days.



The Sylvan Arms Gen 3 AR-15 Folding Stock Adapter is compatible with 5.56 and .308 pattern rifles and allows you to fold your stock for a more compact package for storage. It simply screws into the receiver extension slot where your buffer tube would and then you screw your buffer tube into the stock adapter. The gen 3 folding stock adapter is CNC machined from 7075-T6 aluminum with a heavy duty hinge and hardcoat anodized black for long term corrosion resistance.

Note: Do not fire when open.

  • Compatible with all AR platforms
  • Compatible with 9mm with Sylvan Arms 9mm bolt conversion (not included)
  • CNC machined from 7075-T6 aluminum
  • Hardcoat anodized black
  • Includes buffer extension
  • Includes castle nut and end plate
  • Thread specifications: 1-3/16″ X 16
  • Hinge dimensions: 3 11/16 inches
  • Hinge weight: 6.0 oz, BC – Extension 2.2 oz
  • Hinge length: 1.3 inches
  • Limited lifetime warranty

From 9mm conversion blocks, to rifle tools, to stock adapters, Sylvan Arms produces premium, affordable, firearms, gunsmith tools, and accessories.
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BrandSylvan Arms
MaterialAluminum - 7075-T6
StorageNot Storage Capable
Weight6 oz.

Ratings & Reviews

8 reviews

  • 4 stars
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Works great


Worked great on Foxtrot Mike's 9mm AR. Easy install. No issues. Very happy with it. Slightly on the heavy side, but it's well made.

Great price compared to others


compared to others its price is amazing and I used it on a custom build 357 sig AR that i can now carry in a small backpack thanks to this folding adapter

So far so good


Purchased this and so far 300 rounds and no problems. Supposed to have fixed the problems the gen 1 & 2 and as of this point ,have no complaints.

Just cool


Real eazy swap installed in about 30 min, went to shoot worked fine nice addition to 556 pistol. i just need a dolos and this build is done.. THANKS P A

Does its job


Works great, running on FM-9.

Easy install. So far so good, but if you have the JP Silent Captured Spring buffer...


Does not work with a JP Enterprise SCS buffer. Waiting to hear from JP on if the extension they have for the LAW adapter will work with this adapter. Until then had to revert back to the H2 buffer and spring. Stay tuned.

Built like a tank


Does what it was made to do. A little bulkier than the law tactical but does the same job for a lesser price. Buy them before sylvan ups the price on these. Run it!

Sylvan Arms folding stock adapter


Very well made and priced right. See no difference in quality between this and the more expensive folder out there for twice the price. Will buy again.