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.

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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

Review by Lars I.
Verified Buyer
I bought a few of these and they worked great
Love it
Review by Tedrick L.
Verified Buyer
Easy to install, works great and looks really cool. Makes it very easy to carry my pistol in a backpack or something of that nature now.
Review by Aharon X.
Verified Buyer
Most of the reviews I read people complained about the overall length it adds to the rifle. but for me, it Gave me the extra length I needed to comfortably shoulder and control the rifle while firing it.

Put it on an 8.5 in pistol build.
Nice item
Review by Mick
Verified Buyer
I’ve installed two Sylvan folding stocks. One on an AR9 and one on an AR-15. Both pistols and both function flawlessly. Very simple to install. No issues with the operation, and they are nice to look at. Overall, it’s a great product that functions and looks great, and the company provides top-notch customer support.
Review by Diontay G.
Verified Buyer
Turns my AR15 pistol into a bookbag gun. I've had no problems cycling rounds. Easy to install.
Review by Erik N.
Verified Buyer
Perfect spare stock adapter for my M4.
Great add on, but…
Review by Izel U.
Verified Buyer
Other reviewers have gigged this add on device as adding weight to the weapon. I think that is a trade off and negligible. I installed this on my S&W M&P 5.56 pistol. So far, I am very pleased with the quality and finish of this product. I would have given 5 stars, however the major issue I have with this adapter is that now, in order to remove the carrier bolt group for cleaning, I must disassemble the hinge and SB Brace from the weapon. Also, you will not be able to drop the upper from the lower without disassembly. I also do wish that the tolerance when the hinge is in the closed position was a bit tighter, but this does not affect its performance. Other than this, it is a great add on.
Review by Eddie C.
Verified Buyer
Works as advertised. I have folded mine hundreds of times, gun is still functional.
Tossed in junk pile
Review by Emiliano Q.
Verified Buyer
Folds ok, but would not allow the BCG to fully lock up. Had to push forward assist after every shot. (Over 100rounds) Tried a fail zero and a sharps BCG's had same issue. Removed the folder and all is well. Note I have a Law Tactical which I have no issues with. Twice the costs but it works.
Great way to cut a few inches off of the rifle????
Review by Sunny H.
Verified Buyer
This product works excellent work specially paired with a short barrel AR-15 and a pistol brace.
I trust to set up an app to use it as a truck gun!
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