G&P MOTS 9 inch Upper Cut Keymod for Marui M4 / M16 (SD)

G&P MOTS 9 inch Upper Cut Keymod for Marui M4 / M16 (SD) Metal Construction Keymod System On Both With Sling Point on Both And Bottom 20mm Picatinny on Top Suitable For Tokyo Marui M4/ M16 Series Airsoft Rifle