Crusader Forward Assist Button for VFC M4 / Umarex (VFC) HK416 GBB (Red) Length-(mm)_77 5m / 4ft 11in]

5m / 4ft 11in]

Size: Approx

Tokyo Marui 220rd Magazine for SG550/551/552

Fit for any 20mm Picatinny Rail

With 90 Rounds Magazine

Crusader Forward Assist Button for VFC M4 / Umarex (VFC) HK416 GBB (Red) Length-(mm)_77 5m / 4ft 11in]Crusader Forward Assist Button for VFC M4 Umarex (VFC) HK416 GBB (Red) Metal Construction If the bolt goes forward, it slides a BB into the chamber but if it fails to go into a fully forward position simply racking the charging handle again will not clear the previous BB Instead, you can push the bolt the rest of the way using the forward assist. Suitable For VFC M4 Umarex (VFC) HK416 Series Airsoft Gas Blow Back GBB Rifle