UFC Magazine Speed Roll Up System has a built-in high power motor Fit Most hi-cap magazines (Tokyo Marui and other compatible brands). It will completely wind up your magazine in seconds and all you have to do is press the magazine against it.
UFC Magazine Speed Roll Up System for Hi-Cap Mag
Simply place your magazine on the top of the roll-up unit and let it go
Easy and fast to wind up your hi-cap mags
Suitable for Most Hi-Cap Rifle Magazine
Powered by 2x AAA Batteries (not included)