Z-Parts Aluminum MK4 10 inch Rail w/ Barrel Nut for GHK M4 GBB Airsoft (OD Green)

Z-Parts Aluminum MK4 10 inch Rail w/ Barrel Nut for GHK M4 GBB Airsoft (OD Green) Aluminum Construction Airsoft Handguard 20mm Picatinny Rail on Top & Bottom M Lok on Both Suitable For GHK M4 Gas Blow Back GBB Airsoft Rifles