This is the new E-Mag from Air Gyn Design.
Specs for E-MAG
Price :1,250$ us
Weight 5lbs
Weight , no hopper,tanks or sight rail 3.8 pounds
Length 16.5 inches
Trigger actuated by magnets
45 aluminium grip frame
Dual switch , electric or manuel mode
L.E.D features countdown timer , shot counter plus many more features
Works on 18v regarchable batteryor 2 x 9v batteries
Tested at more than 20 rounds per second**
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Specs For WarpFeed
Price : 150$ us
Length 6 inches
Requires 4x aa batteries or 1 9v battery
Feeds greater than 20 rps
** will be locked at 13 rps