Golden Eagle M240 Bravo Box Magazine for the M240/L7A2. This mag imitates a 50rd belt box in carry bag. This mag is connected to the Golden Eagle M240B and winds automatically off of the gun's power supply so no extra batteries. 4000 BB capacity means you can keep firing and firing and firing.  

Will Fit Golden Eagle M240 Bravo & Golden Eagle M240b/L7A2 Bravo Support AEG