Not sure if there are components that you can buy to achieve this. The main problem is that you would be basically buying a whole new gun. You would need a gas bolt, magazines, you would need a valve system, etc.
In my opinion you owuld be better off if you just baught a gas sniper rifle right away. It would cost less.
In my opinion you owuld be better off if you just baught a gas sniper rifle right away. It would cost less.