The SAW-MAG was designed to have the lowest operating drag due to friction. The ammunition is contained individually inside the drums on sprockets, each cartridge gets its own separate space, the ammunition is picked off the sprockets when they spin, not a typical high friction convergence found on cheaper designs. This is why our drums do not require graphite lubrication to work. The drum shell is designed to guide the cartridges with ridges and this also allows for the drum shell case to accumulate chamber residue from extended high volume usage.

video:
http://www.youtube.com/watch?v=RzlzsdG6 ... r_embedded