M5 90 Round Magazines by MAG
Designed to fit most standard M5's including Echo 1, Classic Army, JG, UTG, etc.
NOTE: Low cap and mid cap mags are spring loaded.
Simply fill with BB's and shoot. The high cap mags are gear driven and
must be manually wound before shooting. It is common for high cap mags
to not shoot all of the BB's inside, due to the nature of the gear
system. Please be careful not to over-wind high cap mags or they may
strip a gear. *High capacity magazines carry no warranty*