KYNTEC | KynSHOT RB5000L Hydraulic Recoil Buffer AR-15 - Collapsible Stock
KYNTEC | KynSHOT RB5000L Hydraulic Recoil Buffer AR-15 - Collapsible Stock
The KynSHOT RB5000L Hydraulic Recoil Buffer is optimized for use with light loads, including subsonic ammunition and .300 BLK. The RB5000L has seen heavy use with civilian competition shooters, law enforcement personnel, and the United Sates Armed Forces. This buffer has patented damping technology to absorb the shock of impact from the bolt carrier’s rearward motion and to prevent bolt bounce as a new cartridge is chambered. This model is made lighter and requires less force to cycle than the standard AR-15 KynSHOT Buffer. This is intended for soft cycling or under gassed guns that will not lock back on the last round with the standard carbine hydraulic buffer or heavier buffers. A .300 BLK gun running exclusively supersonic ammo may be fine with a standard hydraulic buffer if the bolt cycles firmly and has proper ejection placement.
- Weight: 4.0 Ounces.
- Length when Compressed: 3.25".
- Mil-Spec Hydraulic Fluids and Seals - Ambient operating temp certified for -30oF to +150oF
- High strength 17-4 Stainless Steel construction throughout the unit, making it virtually impervious to corrosion.
- Military grade materials and processes used in manufacture.
- Designed for .300 BLACKOUT or any softer cycling AR-15. This could apply to a .223/5.56mm rifle with a gas system that just does not eject very hard, which happens a small percentage of the time, or a .300 BLACKOUT shooting subsonic loads which normally run very soft. .300 BLACKOUT guns running exclusively supersonic ammo may be fine with a standard hydraulic buffer model as long the bolt cycles firmly and ejects cases with authority.
- For subsonic only .300 BLACKOUT guns a Sprinco reduced power (yellow spring) is recommended. For supersonic .300 BLACKOUT a Sprinco White or Blue works well.
- Designed for .223/5.56mm AR-15 Carbines with a collapsible stock. If the bolt is not locking back after final round ejection, first check your gas system, then check your buffer spring. If everything checks, replace your RB5000 buffer with the RB5000L KynSHOT Recoil Buffer to remove less energy from your recoil cycle.
- DO NOT USE IN 9mm AR-15’s. For 9mm AR-15’s use KynSHOT P/N RB5007, RB5015HD, or RB5020SS.
Function
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Recoil Curve
Why KynSHOT?
Most current recoil systems utilize an undamped mass (tuned mass damper) to provide the necessary elements needed for the bolt carrier group to cycle. The problem is that none of the bolt carrier group’s or recoil spring’s stored energy are controlled which leads to instability, vibration, noise, and unpredictable operation.
This is where the patented KynSHOT™ recoil buffers provide the shooter a much more effective option. Please see the video above for a visual look at the energy absorption and functionality of the KynSHOT buffers. When the trigger is pulled, the bolt carrier group accelerates instantaneously from rest to a very high velocity. This change in momentum introduces the first mode of instability to the system. The KynSHOT buffers help mitigate this energy exchange by cushioning the velocity differential using the fundamental concepts of conservation of linear momentum. Additionally, as the bolt carrier group compresses the KynSHOT recoil system, a certain amount of energy gets stored in the internal recoil spring which is a function of the spring rate and the square of the displacement. As the compressed recoil spring drives the bolt carrier group forward into battery, the KynSHOT buffer absorbs that spring energy by controlling the last impact on the detent that would typically cause the muzzle and sights to jump. This is what separates the KynSHOT from all other buffer technologies. The KynSHOT buffer offers energy control and absorption while other buffer options re-introduce all that energy back into the system.
Taking an even deeper look into the rifle, the natural frequency of a spring-mass system is a function of the square root of the spring rate of the recoil spring divided by the mass. In an undamped system (like the H series buffers used today) the excitations associated with a given rate of fire cause a resonance effect with imbedded harmonics and high amplitude vibrations leading to weapon instability. This coupled with the undamped motion of the bolt carrier group make it very difficult to stay on target, causes system noise (twanging), and amplifies any recoil dynamics including sight vibrations, muzzle rise, excessive weapon wear, and excessive recoil.
The patented technology within the KynSHOT controls the harmonically excited vibrations associated with different rates of fire, clipping all the peaks at each natural frequency. By controlling these spring-mass vibrations and modal excitations, the KynSHOT generates a much smoother shooting experience.
In addition, unlike other self-contained closed loop hydraulic systems the KynSHOT buffers use our patented orificing and linearly proportional internal accumulation (thermal and mechanical) to prevent internal pressure spikes that could further exacerbate excitations and instability due to forced orifice flow. The KynSHOT technology smooths out the unit’s force vs. stroke curve, thereby eliminating other secondary forced excitations.
As a final precaution against induced vibration, the KynSHOT buffers contain a bumper, made of a proprietary elastomeric blend, that provides additional damping should the buffer contact the rear of the tube.
This is where the patented KynSHOT™ recoil buffers provide the shooter a much more effective option. Please see the video above for a visual look at the energy absorption and functionality of the KynSHOT buffers. When the trigger is pulled, the bolt carrier group accelerates instantaneously from rest to a very high velocity. This change in momentum introduces the first mode of instability to the system. The KynSHOT buffers help mitigate this energy exchange by cushioning the velocity differential using the fundamental concepts of conservation of linear momentum. Additionally, as the bolt carrier group compresses the KynSHOT recoil system, a certain amount of energy gets stored in the internal recoil spring which is a function of the spring rate and the square of the displacement. As the compressed recoil spring drives the bolt carrier group forward into battery, the KynSHOT buffer absorbs that spring energy by controlling the last impact on the detent that would typically cause the muzzle and sights to jump. This is what separates the KynSHOT from all other buffer technologies. The KynSHOT buffer offers energy control and absorption while other buffer options re-introduce all that energy back into the system.
Taking an even deeper look into the rifle, the natural frequency of a spring-mass system is a function of the square root of the spring rate of the recoil spring divided by the mass. In an undamped system (like the H series buffers used today) the excitations associated with a given rate of fire cause a resonance effect with imbedded harmonics and high amplitude vibrations leading to weapon instability. This coupled with the undamped motion of the bolt carrier group make it very difficult to stay on target, causes system noise (twanging), and amplifies any recoil dynamics including sight vibrations, muzzle rise, excessive weapon wear, and excessive recoil.
The patented technology within the KynSHOT controls the harmonically excited vibrations associated with different rates of fire, clipping all the peaks at each natural frequency. By controlling these spring-mass vibrations and modal excitations, the KynSHOT generates a much smoother shooting experience.
In addition, unlike other self-contained closed loop hydraulic systems the KynSHOT buffers use our patented orificing and linearly proportional internal accumulation (thermal and mechanical) to prevent internal pressure spikes that could further exacerbate excitations and instability due to forced orifice flow. The KynSHOT technology smooths out the unit’s force vs. stroke curve, thereby eliminating other secondary forced excitations.
As a final precaution against induced vibration, the KynSHOT buffers contain a bumper, made of a proprietary elastomeric blend, that provides additional damping should the buffer contact the rear of the tube.
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