Echo1 5000 Round Auto Winding Box Magazine for M4 / M16 Airsoft Guns

Echo1 5000 Round Auto Winding Box Magazine for M4 / M16 Airsoft GunsEcho1 5000 Round Auto Winding Box Magazine for M4 / M16 Airsoft GunsFeatures: - High strength polymer body- 5000 round capactiy- Manual, auto, or sound activated winding- Slimmed down design in comparison to most drum mags- Compatible with most airsoft M4 / M16 AEGPackage Includes:- Echo 1 Auto Winding Box Magazine- Pressure switch- Charger