Hmmm.. Mosmags (CAW/Mosquito Molds mags) are all manual winding and you have to cannibalize a Tokyo Marui highcap mag to make them work. I had 2 and got rid of them for Electric winding verions.
Right now there are a few good manfactureres of electric winding mags:
Keep in mind tho... Drum mags sound like loud friggin maracas beacuase of BB rattle, so if you're not a stationary gunner with a weapon that can do sustained full auto fire, i'd stay away from them.
I bought a 3000 round drum for my MP5... It worked well, it wasn't electric or anything, but it worked... However, the capacity was NOT 3000 rounds... More like 1500ish. I don't know why they say it holds 3000.
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