Video from Laylax showing how to install the NEO R & Gas Route Seal Bucking Aero for the VFC/Umarex Glock Gas Blowbacks... " Utilizing the performance and design of our renown "High bullet valve" series of gas blowback valves, the next generation of LayLax valves are designed with green gas in mind. Optimized for green gas within the VFC gas system, you can expect increased velocity, higher stability, and more consistent shots.

As is standard in our high bullet valve design, the valves are adjustable, with the valve fully opened, higher velocity and power output are achieved, whilst closing the valve reduces pressure output, perfect for summer and hot environments.

Highly adjustable valve to suit your desired effect, high performance, precision machined, Made in Japan quality."