The Evanix Viper Adjustable stock is made of impact-resistant aluminum with plastic. At the end of the stock there is an M18x1 external thread with which you can easily mount the stock .

It provides more stability when shooting with the Evanix Viper and prevents you from feeling the full recoil. It also allows you to better counteract the muzzle blast.

There is a lever on the bottom of the Evanix Viper Adjustable shaft that allows you to adjust the length of the shaft. It can be adjusted in five steps .