The Echo1 M4 Boxmag is an Auto Winding Box Magazine for M16 type AEGs. These 5000 round box magazines will fit standard M4 airsoft guns. The auto-winding M4 boxmag features two modes; constant-on for priming the winding mechanism, and sound activated for on-demand feeding. If you're looking for something to keep you in the game without reloading, or want to lay down heavy fire, these box magazines are ideal.
The Echo1 M4 auto-winding set includes an charger for the rechargeable internal battery, as well as a pressure switch for manual momentary controlled winding. Fits most brand M4 or M16 AEGs. May not fit some other rifles which are STANAG compatible due to outside dimensions.
Echo1 M4 Auto Winding Boxmag Features:
-Sound Activated Winding
-Optional Pressure Switch Winding
-Includes Battery Charger
-Ultra High Capacity
-5000 Round Resevoir