Redline Poppet Shim Kit Hop Up Parts Includes rubber hop up unit

Includes rubber hop up unit installed

Made to fit the TEC9 AEG Echo 1 gun

Attaches to any standard 1913 picatinny rail

Mounts to standard rail systems

This is an exciting change as some of our customers have wanted a green reflex sight

Redline Poppet Shim Kit Hop Up Parts Includes rubber hop up unitThe Redline Poppet shim kit allows you to tune the airflow through your stock PolarStar Poppet. You can swap or combine the color coded shims to achieve the ideal airflow for your gun. The Redline Poppet shim kit gives you all the benefits of a low flow Poppet with the added advantage of shorter poppet dwell times and multiple possible air flow configurations. By adding a shim or shims to your Poppet you reduce the Poppets travel. Reducing the Poppets