Friends! I bring to your attention the concept of Mechanical Zelinka! The very successful Zelinka Form Factor can now be used to mechanically engage a piston with an automatic trigger thanks to the moving barrel! Outside, it will be impossible to recognize where the valve is, and where the mechanical Zelinka is! The use of a ball hook is due to the minimization of the linear size! If the Masters finally do this *Miracle*, then you will be pleasantly surprised by the operation of the gun without throttle and delays! You need to pump through the barrel using the pumping piston! Glory to Ukraine!