Dytac Enhanced FKM 19.1mm 60 Degree Piston Head w/ Nozzle Spring For Tokyo Marui MWS GBB Airsoft Rif

Key Feature 60 Degree FKM Rubber Construction Piston Head FKM (Fluoroelastomer) Fluorocarbon Construction ? Superior heat, oil, and chemical resistance for high-pressure GBB systems 19.1mm Diameter Piston Head With Steel Nozzle Spring (Adds durability and maintains proper nozzle tension) Chemical & Oil Resistance: Prevents swelling/degradation from silicone oil absorption Operates effectively in -25C to 205/230C, suitable for year-round use Improved Gas Efficiency & FPS Consistency ? Tight air seal enhances shot-to-shot reliability Improve Loading Smoothness & Air Tightness Suitable For Tokyo Marui MWS Gas Blow Back GBB Airsoft Rifle