Hephaestus Enhanced Buffer Kit for Umarex/VFC HK417 GBB Series Standard Base Pad This is a replacment piston

This is a replacment piston for APM40 Spring Action Sniper rifle used

With the use of 8mm German made bearing bushing

2- or 3- point tactical sling  Remember to check out our Store for battery

Removable Metal Magwell

Built Material    Steel Construction

Hephaestus Enhanced Buffer Kit for Umarex/VFC HK417 GBB Series Standard Base Pad This is a replacment pistonHephaestus Enhanced Buffer Kit for Umarex VFC HK417 GBB Series CNC machined aluminum casing with spring loaded steel weight insert. Increase kick, enable sharp recoil and reduce bolt carrier bounce, without sacrificing gas efficiency. Removable steel weight insert for different shooting experience. Drop in replacement for original Buffer assembly (04 2 & 04 3). Suitable for Umarex VFC HK417 Series Airsoft Gas Blow Back GBB Rifle