Masada (A&K) Hop-up chamber, spring, switch, hop up bucking and rivet

This parts are manufactured under CNC process, it improves :

1) smoothness of loading BB, suitable for high frequency shooting;

2) air-tight in the system;

3) strengthen construction and durable;

4) hop-up performance.

5) The 70 degree hop up bucking further improve air-tightness and increase shooting power.

All products are for airsoft only.  They are not made for real steel firearms.