Z-Parts MK16 M LOK Rail for GHK M4 GBB Rifle (w/ Barrel Nut, 360mm)

Z-Parts MK16 M LOK Rail for GHK M4 GBB Rifle (w/ Barrel Nut, 360mm) Metal Construction 13.5" M LOK System Handguard Able to Transform Your M4 Rifle to URGI Style Rifle Suitable For GHK M4 Series Airsoft Gas Blow Back GBB Rifle Length: 360mm