Z-Parts MK16 M LOK 9.3" Rail for Umarex (VFC) M4 GBB (w/ Barrel Nut)

Z-Parts MK16 M LOK 9.3" Rail for Umarex (VFC) M4 GBB (w/ Barrel Nut) M LOK System Handguard 20mm Picatinny Rail on Top Come With Barrel Nut Suitable For Umarex (VFC) Series Airsoft M4 Series Airsoft Gas Blow Back GBB Rifle Length: 255mm