Frag Out! Magazine
Issue link: https://fragout.uberflip.com/i/1519846
Hydraulic buffer general view RB5000 HYDRAULIC BUFFER FOR AR-15S leading outwards. At the end of the piston rod is embedded a plate sha- ped almost identically to the end of a standard buffer. The entire buffer is about 10 mm longer than the re- gular one. HOW IT WORKS? It's very simple, drop in modification. Just remove the old buffer, replace it with Kynshot and that's it. After in- stallation you can immediately feel the difference - when charging the weapon (even dry), you pull the re- loading handle and feel the resistan- ce of the return spring. Further we come to a resistance and in a plain jane rifle this would be the end of the movement, but with the KynSHOT buffer this resistance can be bro- ken and the handle can be pulled another 10 mm or so - this is what hydraulics does. When the trigger is pulled, the bolt carrier group accelerates instan- taneously from rest to a very high velocity. This change in momentum introduces the first mode of insta- bility to the system. The KynSHOT buffers help mitigate this energy exchange by cushioning the velocity differential using the fundamental concepts of conservation of line- ar 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 batte- ry, the KynSHOT buffer absorbs that spring energy by controlling the last impact on the detent that would ty- pically cause the muzzle and sights to jump. This is what separates the KynSHOT from all other buffer tech- nologies. 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 embedded harmonics and high amplitude vibrations leading to we- apon 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. In theory, this is supposed to give a minimized impact of the weapon on the shooter by reducing recoil, reducing wear and tear on parts of the weapon, and reducing the shock transmitted to the optics and elec- tronics. Kynshot has four AR buffers (stan- dard, longer for fixed stocks, over- -gassed and for subsonic), three .308 buffers, three for AR-based PCC's and a dozen for shotguns. HOW DOES IT RUN? EQUIPMENT