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Presma AR Pistol Stabilizing Fin
$17.99 $16.69 Save $1.30
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Most Helpful Positive Review Great for a fin
This is just the thing for my ar pistol build. For the price, it is a great buy. The screws are perfectly to spec and lock it down tightly to the buffer tube. The plastic does not feel cheap at all. Unless you are getting a Maxim for 10X the price, save your money with Presma.
Most Helpful Negative Review wont tighten
Feels like good quality but it won’t tighten down.
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Surprisingly Solid Attachment

by PS Professor Nick, Verified Owner from MI, United States Written on May 22, 2026
I bought this to go on a KAK Mini pistol buffer tube I was using in a “spare parts” build. Without spending much, I got something that was damned near immovable and, because of the clamping system, didn't depend on having a set screw directly in contact with the receiver extension.
Pros:
  • Clamping system rather than a set screw.
  • Good quality fasteners that I was able to give a solid torque without concern for stripping them.
Cons:
  • Once you set it it, you are going to have to work if you need to adjust it.
Best Used for:
  • Real pistol builds that are not just SBRs hiding behind a legal fiction.
Would recommend: Yes
Was it helpful to you? Yes | No

great price but did not fit my buffer tube

by Tick, Verified Owner from OK, United States Written on April 2, 2026
this did not end up fitting my buffer tube, i needed to increase the buffer tube by adding tape so the brace would be able to tighten on the buffer tube.
Pros:
  • Affordable
Cons:
  • Fit
Best Used for:
  • AR Pistols
Would recommend: Yes
Was it helpful to you? Yes | No

Nice fin slim n light

by Smokey, Verified Owner from MI, United States Written on March 31, 2026
Fit real nice very slim works well we’ll probably buy another one
Would recommend: Yes
Was it helpful to you? Yes | No

Pistol tube

by Gary, from MI, United States Written on November 9, 2025
Yes I ran into this problem, If product specifies pistol brace you must assume the pistol tube! It is different from the AR15-M4 stock tube!
Pros:
  • None
Cons:
  • Specify pistol tube is different from a stock AR or M4 tube!
Best Used for:
  • Pistol Brace formats
Would recommend: Yes
Was it helpful to you? Yes | No

Presma AR Pistol Stabilizing Fin

by OD, Verified Owner from KY, United States Written on August 17, 2025
It was easy to install. It looked really good on the. Gun The quality is excellent.
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No

AR pistol Fin

by jsc, Verified Owner from VA, United States Written on April 25, 2025
Got the fin as opposed to a brace bc the fin was $18. It works great on my 7”, 5.56 pistol.
Would recommend: Yes
Was it helpful to you? Yes | No

Okay didn't work forme

by Pdog, Verified Owner from NE, United States Written on October 13, 2024
Didn't work on the spikes tactical tube for pistol ar. Couldn't get tight enough to stay in place. Why I didn't recommend. Wouldn't have ordered pistol tube had I known and don't have any rifle ones to check
Would recommend: No
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No
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Last updated 2025-11-12 UTC.