5KU M4 Carbine URX RAS Handguard For M4/M16

5KU M4 Carbine URX RAS Handguard For M4/M16 Metal Construction Suitable For M4 Series Airsoft Electric Gun AEG/ Gas Blow Back Back GBB Rifle Free Floating System 20mm Picatinny Rail System RIS Handguard Come With 2 Piece Rail Cover Length: 177mm