Jing Gong JG36 to M4 Magazine adapter
Simple swap out G36 to M4 magazine adapter. Just remove the retention pin, unhook the original magwell and put the new one on.
E&C HK416 Metal Receiver ( Body) 416 Marks Aluminium upper and lower receiver for M4/M16 series airsoft guns. This body is for AEGs only. Comes with 416 Markings