G&P 16.2 inch Upper Cut M LOK for Marui M4 / M16 & WA M4A1 Rifle

G&P 16.2 inch Upper Cut M LOK for Marui M4 / M16 & WA M4A1 Rifle Metal Construction M LOK System Handguard And 20mm rail on Front & Rear Can Fit G&P Front Set & GBB Metal Body For Marui M4 / M16 AEG Series & WA M4A1 GBB Series Airsoft Rifle Length: 410mm