Kynshot RB51000 Hydraulic Recoil Buffer System For Remington 870 Shotguns

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5.00 LBS
  • RB5100 HYDRAULIC RECOIL BUFFER Patented Adjustable Damping Technology THE MOST EFFECTIVE Recoil Reduction Product You Can Put on a Shotgun.
  • Kynshot RB51000 Hydraulic Recoil Buffer System For Remington 870 Shotguns
  • Kynshot RB51000 Hydraulic Recoil Buffer System For Remington 870 Shotguns
  • Kynshot RB51000 Hydraulic Recoil Buffer System For Remington 870 Shotguns
  • Kynshot RB51000 Hydraulic Recoil Buffer System For Remington 870 Shotguns
  • Kynshot RB51000 Hydraulic Recoil Buffer System For Remington 870 Shotguns
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The SK5100R Shotgun Conversion Kit for the Remington 870 is a premium kit which typically take less than 15 minutes to completely install using only ordinary hand tools. SK5100R Shotgun Conversion Kits include a KynSHOT RB5100 Hydraulic Recoil Buffer, a premium quality cast aluminum stock adapter, all hardware needed to mount the buffer, an armorer’s wrench, and a complete instruction set. 

KynSHOT encourages and promotes everyone to follow the proper gun safety guidelines when handling any firearm at all times. 


  • KynSHOT offers a revolutionary damping selection feature that allows you to choose from one of three damping settings – light for lighter loads, medium for normal shooting, and high higher power rounds.
  • Aerospace quality aluminum and military-spec compliant processing
  • Fits Remington 870 models only. 
  • *Mossberg 500/590 Adapter shown. 
  • Will not fit Remington semiautomatic shotguns.
  • Export of this product is restricted by the Export Administration Regulations (EAR). Disclosure to foreign persons without prior U.S. Government approval is prohibited. Violations of these export laws and regulations are subject to severe civil and criminal penalties.
  • Please consult the factory for assistance with your application.

LEO® Gen II Telescoping Stock Adapter for Rem 870 (12-GA only)

Mesa Tactical's LEO® Gen II Telescoping Stock adapter and pistol grip system for the Remington 870 shotgun is made specifically with law enforcement in mindThe LEO Stock adapter system is designed to allow shooters the ability to fit AR style collapsible stocks and pistol grips onto their shotguns, while allowing use of open or bead sights. The versatile telescoping stock adapter system can be fitted with a standard AR-15 grip and telescoping stock, which enables tactical operators to instantly adjust the length of pull of the telescoping stock in order to accommodate differences in individual body sizes or use of body armor. 

The LEO adapter is available in three types of kits, adapter kits, recoil starter packs or complete stock kits. Mesa Tactical’s upgraded versions include KynSHOT's hydraulic recoil buffers which replace the standard receiver extension tube normally used with AR-15 style telescoping stock assemblies. The recoil buffer is manufactured for Mesa Tactical by Kyntec. The KynSHOT hydraulic buffers (Mil-spec) are a recoil reducer designed for professional operators who require optimum accuracy and control. The KynSHOT hydraulic recoil buffers reduce felt recoil from 70% up to 90%.

LEO® Telescoping Stock Adapters and Conversion Kits

  • Adapts AR-15 style buttstocks and pistol grips for use with Remington 870, Mossberg 500/590 and Beretta 1301 shotguns.
  • Stock adapters are investment cast aircraft grade aluminum, CNC machined and powdercoated black with a tough, chemical resistant finish.
  • Adjustable length-of-pull (LoP) to fit shooter’s stature or for use with body armor and other equipment.
  • Optional KynSHOT® hydraulic recoil buffer (standard damping) reduces felt recoil by 70%; KynSHOT® hydraulic recoil buffer (selectable damping) reduces felt recoil by up to 90%.
  • Gives the shotgun similar handling characteristics to the AR-15.
  • Collapsible stock makes shotgun easier to stow, transport and deploy.
  • Pistol grip configuration allows increased control and user comfort.
  • Sling attachment points included.
  • Optional SureShell® aluminum carriers can be added to the M4 carbine buttstock.
  • Complete stock kits include stock adapter, M4 Carbine buttstock, Mesatac® Trego pistol grip and push-button sling swivel.
  • No gunsmithing required.

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 You must be 18+ years old to shop and or purchase on our website and 21+ to purchase Ammunition/Firearms. Check local laws before ordering as you certify you are of legal age and satisfy all federal, state, and local legal/regulatory requirements. There are NO returns or exchanges on armor, firearms, ammunition, PPE equipment. Ammo ships UPS ground to the lower 48 states.
We reserve the right to fix any critical errors.

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