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Kynshot RB5000 Hydraulic Recoil Buffers 5.56mm / Collapsible Stock

(4 reviews) Write a Review
0.33 LBS

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The RB5000 KynSHOT Recoil Buffer is designed to fit AR-15 carbines with a collapsible stock. Made using 17-4 stainless steel, the KynSHOT RB5000 Recoil Buffer is a proven system that has seen heavy use with civilian competition shooters, law enforcement personnel and the United States Armed Forces. This buffer has patented damping technology to absorb the shock of impact from the bolt carrier’s rearward motion and prevent bolt bounce as a new cartridge is chambered. The KynSHOT RB5000 Recoil Buffer reduces felt recoil by 20-30%, while eliminating muzzle flip. The improvement in weapon accuracy – specifically second and third shot accuracy- is large as shooters report that their time to reacquire a target decreases, and in many cases never leaves their scope sights.


  • Drop-In Replacement
  • Reduce felt recoil
  • Improve reliability
  • Reduce bolt carrier speed
  • Reduce wear on parts
  • Reduce shock and vibration to optics
  • Suppress bolt bounce
  • Decrease sight movement
  • Smoother operation
  • Faster shot recovery time
  • Military grade materials and manufacturing


  • Weight 4.2 Ounces
  • Length when compressed 3.25”
  • Designed for .223/5.56mm AR15 Carbines
  • DO NOT USE IN 9mm AR15s. For 9mm AR15s use KynSHOT P/N RB5007, RB5015HD, or RB5020SS. See Selection Matrix for proper buffer choice.
  • Mil-Spec Hydraulic Fluids and Seals- Ambient operating temperature certified for -30F - +150F
  • High strength 17-4 Stainless Steel construction throughout the unit making it impervious to corrosion.
  • Can be used with a wide range of AR-15 calibers to include .450 Bushmaster, 7.62x39, 6.8 SPC, 6.5 Grendel, 7.62x40 Wilson, .204, .350 Legend, etc.

WARNING This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. We are Not Accepting Returns or Exchanges For Any PPE Equipment or Ballistic Items.
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Additional Information

Product ID:
AR15/M4 Buffer
Made In USA
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4 Reviews

  • 5

    Posted by Tim on 3rd Aug 2020

    Yes you will notice immediately how much smoother your rifle feels. Not by a great deal but maybe by 20-30% if that makes sense. When I engage a target up close and just decide to dump rounds in it I can see my shot group tighten. I’m not disappointed with this purchase.

  • 5
    Kynshot recoil dampener

    Posted by Stephen Blayne Smith on 17th Feb 2019

    This thing is awesome! It makes a 223 round feel like 22LR. Can’t wait to see what it’s like with the 6.5 Grendel I’m putting together. It’s super sweet.

  • 5
    Kynshot Hydraulic recoil buffer

    Posted by PADuck on 17th Nov 2018

    The "traditional" spring-based recoil damper design of the AR leaves much to be desired. I have been looking for a good price on a quality hydraulic damper this fits the bill in my current 10.5" 300 AAC Blackout build. I have only fired a few rounds, recoil is reduced- on a round it is already low recoil. Quality appears high on this item. This was a good purchase.

  • 5
    Really works well in reducing recoil and making the rifle work more reliably.

    Posted by Tom on 10th Jul 2018

    Good unit at great price.

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