CYMA Upper Receiver Cover with 20mm Tactical Rail Rear Sight For D-Boys Jing Gong JG Golden Eagle CYMA Tokyo Marui AK47 Series AEG Rifles Airsoft BlackCYMA Upper Receiver Cover with 20mm Tactical Rail Rear Sight For D Boys Jing Gong JG Golden Eagle CYMA Tokyo Marui AK47 Series AEG Rifles Airsoft Made out of Metal. Come with 20mm Standard Rail for your tactical accessories: Scopes, Flashlights and Laser Sights, RIS Foregrip with Built in Rear Sight. Suitable for CYMA CM077 AK47 Series AEG. Also compatible with CYMA and Tokyo Marui AK47 series. Color Black Full Length 243mm Top Rail 190mm Weight