The KynSHOT Hydraulic Guide Rod is designed and optimized to be a drop-in replacement for all guide rod assemblies used for the Glock 43 19 slide or alike, without having to change the configuration of your current firearm. Their innovative design uses a unique damping configuration to allow the slide to cycle properly, controlling the overall movement and speed of the slide. Features : Reduces Recoil Motion 70% Improve Firearm Reliability Reduces Slide Speed Reduces Optic Vibration GLOCK is a federally registered trademark of Glock, Inc. and is one of many trademarks owned by Glock, Inc. or Glock Ges.m.b.H. Neither 3CR Tactical nor this site are affiliated in any manner with, or otherwise endorsed by, Glock, Inc. or Glock Ges.m.b.H. The use of "Glock" on this page is merely to advertise the sale of Glock pistols, parts, or components. For genuine Glock, Inc. and Glock Ges.m.b.H products, visit https://us.glock.com .