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Blitzkrieg Components AR 9 mm Recoil Buffer
$164.99 $159.99 Save $5.00
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Most Helpful Positive Review Tames back to battery thump
My FM-9 had an annoyingly harsh back to battery recoil that pulled the optics off target consistently. This buffer greatly improves the feel of the bolt coming forward, optic jump and generally smoothing out the entire recoil impulse. It is kind of expensive for a part on a firearm meant to reduce cost of range trips, but otherwise the FM-9 would be staying home a bunch more.
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AR-9 Buffer

by Andrew Fang, Verified Owner from MD, United States Written on December 9, 2025
Easy to order, great selection at Optics Planet. Selected this buffer due to its similarities to the Hydraulic buffer in the B&T, but for use in my H&R SMG Pistol. Fast shipping and great communication. Great quality of the product.
Pros:
  • Quality
  • shipping
  • Selection
Cons:
  • None
Would recommend: Yes
Was it helpful to you? Yes | No

paired with a5 system

by hawaiislayer96, Verified Owner from HI, United States Written on December 4, 2025
This thing works flawless with the a5 system and a hyper tap muzzle device
Would recommend: Yes
Was it helpful to you? Yes | No

Does what's advertise.

by Soundshooter, Verified Owner from MA, United States Written on June 21, 2024
Easy install. Upgrade the spring as well which made my felt recoil about 50 percent lighter. Works well for quick follow-up shots. That's where you'll see the most impact on your shooting. Not cheap but what is these days. If you compete, it's a must have.
Pros:
  • Good follow up shots
Cons:
  • Not cheap but worth it
Best Used for:
  • Competion
Would recommend: Yes
Was it helpful to you? Yes | No

Works as stated.

by Soundshooter, Verified Owner from MA, United States Written on June 14, 2024
Installed this with an updated spring to replace my tired OEM set-up. This product works as advertised. Lessened recoil by half. Faster follow up shots to make double taps with much greater ease. Easy to install. Pay attention the OEM weight of your buffer. This version worked with the original 8.8oz buffer. KynShot makes different version for the 9mm PCC.
Pros:
  • Better follow up shots
Cons:
  • Pricey
Best Used for:
  • 9mm PCC
Would recommend: Yes
Was it helpful to you? Yes | No

Great buffer

by Jeff S, Verified Owner from PA, United States Written on April 10, 2024
Awesome buffer. Helped soften the recoil in my AR9
Would recommend: Yes
Was it helpful to you? Yes | No

Can't go wrong

by Ghosty, Verified Owner from ME, United States Written on January 31, 2024
These things are an improvement, period. It can be really difficult to find the sweet spot with AR9 spring/buffer weight combos. I put mine in and had to try it out right away, and can definitely tell a positive difference. If I ever build another one, I will absolutely be buying another one of these hydraulic buffers
Pros:
  • Faster follow up shots
  • Softens recoil
Cons:
  • None
Best Used for:
  • Any blowback ar9
Would recommend: Yes
Was it helpful to you? Yes | No

Smooth Running

by Chas1, from PA, United States Written on November 27, 2023
The recoil buffer worked perfectly, my AR9 is running smoother with less recoil.
Would recommend: Yes
Was it helpful to you? Yes | No

Awesome product and price.�

by Dac, Verified Owner from GU, United States Written on November 23, 2023
Product is AWESOME. Fast shipping. The product works /drops in without no problems. Price is reasonable. The feel of it helps in keeping the gun steady and on target. I will be purchasing more in the future.�
Would recommend: Yes
Was it helpful to you? Yes | No

Almost no felt recoil

by Lance, Verified Owner from GU, United States Written on October 21, 2022
On my AR 15 full length (16 inch barrel) PCC chambered in 9mm, I have been rocking this KynSHOT AR 9mm recoil buffer for about a year now and it is awesome. I have put about 1000 rounds down range rapidly and single shot increments, and it still feels the same as when I first bought it. Just for kicks, I have also used this on 5.56 and its wonderful. The recoil felt is very minimal at single shot increments, at rapid fire, some recoil will be felt. However, please stick to the suggested caliber this was intended for.
Pros:
  • Easy to change out
  • Easy maintenance
  • afforable
Cons:
  • skinny tube on neck makes it feel like it will break easy
Best Used for:
  • AR 15 platform buffer tube types
  • AR 15 platform blowback pistol caliber carbines (9mm)
Would recommend: Yes
1 of 1 found the following review helpful.
Was it helpful to you? Yes | No

Nice and QUITE

by TAZ, from MI, United States Written on April 3, 2021
My son told me about the hydraulic buffer and how quite they are. They might cost a little more but I'm willing to pay more for a better piece of equipment. I'm very pleased with the results thanks to my son.
Would recommend: Yes
1 of 5 found the following review helpful.
Was it helpful to you? Yes | No
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