Hephaestus Enhanced Buffer for Umarex (VFC) HK417 GBB Rifle

Hephaestus Enhanced Buffer for Umarex (VFC) HK417 GBB Rifle CNC Metal Construction Increase The Rifle Kick and Produce Sharp Recoil Reduce bolt carrier bounce Design For Replace the Original Parts Suitable For Umarex (VFC) HK417 Series Gas Blow Back GBB Rifle Airsoft Guns