Medusa's 15 Half Steel Airsoft Piston is next upgrade you need for your rifle's gearbox. Armed with a full rack of 15 half teeth, this piston will give you more time for rapid shooting.
Why choose this piston?
With any piston, you should correct your angle of engagement, either using washers on the piston head or with a sorbo pad on the cylinder head. Ultimately, a piston is expected to wear over time and should be replaced at some point in time.