Our take: This is a JG 200-Round M5 Metal high capacity magazine. This universal M5/ MP5 High Capacity Magazine can be used with most M5/ MP5 Metal Gearbox AEGs, including Echo1, JG, Classic Army, ICS, G&G, Tokyo Marui and more!
Compatibility: Echo 1, JG, Classic Army, ICS, and TM MP5/ M5 AEGs.
Construction: Metal Alloy w/ ABS plastic winding wheel, and loading cover
Finish: Matte Black