The Sylvan Arms Folding Hinge Stock Adapter allows you to fold your stock and significantly reduce the length of your rifle for easy stow and travel. Once properly installed, the look and feel of your AR is upgraded to a more modern PDW type design that you'll quickly want for all of your other AR rifles.

In stock


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 American Owned and Operated

20+ Years In Business



  • Sylvan Arms AR Folding Stock Adapter - Generation 3
  • Works on 5.56/.223 or .308 AR Platforms
  • CNC Machined from 7075 BNillet Aluminum
  • Black Hard Coat Anodized
  • Lifetime Warranty
  • Made in the USA
  • UPC: 852237007365

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Customer Reviews

Almost perfwct/
Review by Derius Q.
Verified Buyer
It would have a 5 star rating IF the 9mm BCG adapter was available through KS. It sells in Canada for $19 and in the USA for $29 plus shipping.
So I was not happy about having to order via Sylvan Arms who sub contracted the purchase via a machine shop.
great design
Review by Deon B.
Verified Buyer
worked perfectly! installation was easy no modifications were required.
Review by Stran F.
Verified Buyer
Great product!! Used it on my 7.5" AR pistol. Easily and quickly folds.
Review by Agron U.
Verified Buyer
Good except it needs a stronger spring in the folding mechanism to hold stock in folded position.
Perfect solution for less cheddar
Review by Dixon U.
Verified Buyer
Works like a charm. Cheaper than law tactical and does the same thing. Newer generation solved a lot of old problems. Easy install. Good tension on the adapter when in the folded position. Held up well thus far, but only about 60 rounds through it. Not expecting any problems.

Highly recommend checking OAL and LOP measurements and how this would effect your build in the eyes of the ATF.

Very happy with it and would purchase again in the future. KS with fast shipping.
Very useful addition.
Review by Issam Z.
Verified Buyer
Have a couple of these, very happy with product & order. Arrived as scheduled, just as described, well pkg'd. Will not hesitate to order in the future.
Great product
Review by Asad H.
Verified Buyer
Great product for my AR15 pistol build
built solid but a couple cons
Review by Georges K.
Verified Buyer
Works great on my 556 but leaves BCG slack on my KS ar-9 pcc. Sylvan Arms offers a BCG extension weight but has an angled pin hole for older models. I'm trying to get with them about a horizontal pin hole.
The hinge does impact the charging handle for me on both of my ar platforms but an ambi charger helps.
Review by Paxon E.
Verified Buyer
Works perfectly as intended.
Review by Keion Q.
Verified Buyer
Initial review: no long term use.
Purchase was a 5. Always prompt and as advertised.
Fit and function/ install a 5.
Only reason for a 4 is no real long term use, but I bought (2) at a good price. It is comparable to the leading brand, but no issues yet.
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