Aluminium magazine for the Silverback SRS-A1. 30 rounds. Desert Tech licenced product. With an aluminum casing (grey anodizing), for a weight of 108 grams instead of 204 grams for the steel version (47% lighter). All these new mags will come with the standard follower installed and a long flexible one to finish those four bbs staying in your bb tube (magazine capacity reduced to 26 rounds).