Hephaestus High Performance Piston Head For KRYTAC KRISS Vector GBB Airsoft SMG

Hephaestus High Performance Piston Head For KRYTAC KRISS Vector GBB Airsoft SMG CNC Aluminum Construction Airsoft Piston Head Enhanced design features for improved air-sealing and smoother cycling Provides an overall performance boost and increased gas efficiency Delivers stable and consistent performance with reduced cooldown effects Seamless drop-in upgrade that replaces the stock piston head Includes a spare o-ring for easy installation Engineered to deliver uncompromising quality and reliability Suitable For KRYTAC KRISS Vector Gas Blow Back GBB Airsoft SMG