E&C M4A1 Full Metal AEG

E&C M4A1 Full Metal AEG with authentic deep-engraved trades and AD Custom markings. Features a 14.5" outer barrel, classic M4 handguard, and matte finish full metal receiver for realistic aesthetics. Equipped with a rotary hopup system and enhanced metal gearbox with 8mm bearing bushings for reliable performance. The Standard Ver. 2 gearbox includes quick spring change design—swap springs in under 10 minutes without disassembly. Includes 300-round hi-cap magazine. Built for serious airsoft operators seeking durability and field-ready functionality.