E&C M16A4 20 Inch AEG Airsoft Rifle EC-307QD System: With Quick Disassemble System, even beginners can replace the spring in a minimum of 60 seconds. Solid Construction: Built with a full metal upper and lower receiver for enhanced durability and authenticity. Easy Adjustment: Features a mock bolt that locks open, providing easy access for hop up adjustments. Upgradeable Design: Equipped with a metal Version 2. 0 gearbox, our airsoft gun offers easy upgradeability to enhance your gaming

1 inch Barrel Thread CCW Dimension     L×W×H 70 × 11 × 37 cm Gross Weight 3

Firearm Model HK416 RAHG Material Metal Power Source Electric Speed

5 inch Barrel Thread CCW Dimension     L×W×H 62 × 11 × 37 cm Gross Weight 3

Adjustable Barrel Length 9

Brand E&C  Airsoft Model EC-111

Applicable to most E&C HK417 model AEG products

Brand E&C  Airsoft Model EC-305 Firearm Model M4 RIS II Material Metal Power Source Electric Speed

making it easy to customize and enhance your setup for any tactical scenario

Brand E&C  Airsoft Model EC-601 Firearm Model MK110 Material Metal Power Source Electric Speed

5 cm Gross Weight 3

Firearm Model HK416A7(G95 TFB)  Material Metal Power Source Electric Speed

Brand E&C  Airsoft Model EC-204