Steel spring guide stopper purpose is to block inner spring guide.
Stock stoppers are made of weak aluminium or zinc alloys.
It is worn for a while and breaking is not rarely.
In additional, risk is much higher on stronger springs.
Our custom spring guide stopper is made by steel on CNC machines.
Surface is hardened on HRC48-55.
This brings maximum durability.
Outer design fit in the trigger box without movement.
This stopper is dedicated for Well / APS L96 rifles. For example Well MB01, 04, 05, 08...