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HERA Arms AR15 Side Folding Unit Adaptor
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Most Helpful Positive Review perfect side folder for cz scorpion
I wanted to be able to fold my scorpion, with SBA3 brace, into a package that would fit into my regular backpack. This fit the bill and more. Solid construction, I tried a few others that were flimsy, very tight lockup and open and closes with one hand. The unit is designed to fold to the right side...
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Most Helpful Negative Review Not as described
Doesn’t work for ARs…not sure if they sent me the wrong unit or just don’t know what they are talking about with the listing. It seems well built, but I’ll be returning it as it’s nothing more than a paper weight. I’m not sure what it works with, but definitely not an AR-15.
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Can’t beat it…

by Robbie, Verified Owner from KY, United States Written on July 20, 2025
I have used Hera’s SFU on several builds over the years. From chassis bolt guns to custom shotgun builds, the SFU is built like a tank. I’ve had no problems with it coming loose or rotating. If you’re looking for a way to fold a non functional buffer tube system, this is by far the best option. They are becoming harder to find in stock, but Optics Planet came through again.
Pros:
  • Well built, good craftsmanship
Cons:
  • None
Best Used for:
  • Any non functioning buffer tube
Would recommend: Yes
Was it helpful to you? Yes | No

less than a year failure!

by sharpshooter33, Verified Owner from OH, United States Written on April 16, 2025
Got this about a year ago after a wait for them to be in stock. I have used it on a creedmoor bolt gun for just under a year. Didnt have any issues until i noticed cleaning the gun the hinge has flexed and now i have considerable wobble in the hinge. So my buffer tube n stock wobble when shooting.
Havent even used the folder much at all. Only for cleaning to clear the bore guide. I would not recommend. Youtube video will be following shortly. Already have the video footage.
Would recommend: No
Was it helpful to you? Yes | No

Perfect fitment

by K Clark, Verified Owner from PA, United States Written on December 14, 2024
Fit perfect. Use a small piece of tape on each side for a stiffer lockup.
Would recommend: Yes
0 of 1 found the following review helpful.
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Great side folding adapter

by SE, Verified Owner from NH, United States Written on December 4, 2024
This is my favorite adapter to use on a Kriss Vector for use with a brace. I highly recommend them.
Best Used for:
  • Kriss vector
Would recommend: Yes
Was it helpful to you? Yes | No

i now have had 3 of these.

by sharpshooter33, Verified Owner from OH, United States Written on October 26, 2024
Ok, i had a threading issue with one that was a defect and replaced by OP with no problems.
That said only negative that could be considered a negative is that it doesnt have a lock clised position. Since for me its used on bolt action chassis rifles that is irrelevant.
The design is great. Good lockup and very streamlined and compact. For the price i believe this is the best option for my requirements. It allows me to shorten my transport package and also swing the stock out of the way for cleaning. If you use a riser for your cheek you will know the are an issue for running a bore rod or guide into the receiver.
That said i think its best in price for my needs.
Thanks
Would recommend: Yes
1 of 1 found the following review helpful.
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Definitely recommend

by Dale Palmer, Verified Owner from TN, United States Written on August 6, 2024
Great quality, works perfect on my Kriss Vector. Definitely would recommend, half the price of what vector charges for essentially the same thing.
Would recommend: Yes
1 of 1 found the following review helpful.
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extreme tight fit in S2Delta chassis!!!

by sharpshooter33, Verified Owner from OH, United States Written on July 31, 2024
Ok, it was a major work getting this SFU screwed into my S2Delta chassis. I had to confirm threads with other receiver to make sure threads were correct. I had to work it like tapping the threads! Also had to use a buffer tube as a wrench to get enough torque to twist it all the way in. Really i wouldnt recommend what i did because it may have torqued the hinge some. Anyway... It is a pretty nice design and it works great on the chassis. Its not coming off. Hope it lasts.
The threads on the S2delta chassis are thick threads and so are the Hera SFU.
The S2Delta chassis makes it easy to add a SFU without increasing length of pull by design.
Would recommend: Yes
1 of 1 found the following review helpful.
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My review is below- title doesn’t need 10 words

by Terry, from AZ, United States Written on January 25, 2024
Very well made and easy to install ! Can be used for folding right or left! Fit and finish is way better than most.
Best Used for:
  • Arm brace
Would recommend: Yes
1 of 1 found the following review helpful.
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Not the Hera folding I was expecting

by MolonLabe, Verified Owner from FL, United States Written on January 14, 2024
This adapter must have been a return item, can see scuff marks all over. Also the folding bracket is extremely loose so much my buffer easily moves up and down once folding out to shoot. Disappointed in getting an obvious used item, I have a Hera on my other bolt action. Fold with a solid click from the indents and absolutely no flexing.
Would recommend: Yes
1 of 1 found the following review helpful.
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impressive

by mike, from FL, United States Written on December 27, 2023
Haven't time/field tested yet,but this adapter won't be the problem with my recent build...Quality German engineering..
Pros:
  • tight tolerances
Cons:
  • Expensive
Best Used for:
  • carrying your rifle in bag when folded
Would recommend: Yes
1 of 1 found the following review helpful.
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