Gone but not forgotten.
I know exactly squat about electronics, but could this work? I'm thinking of the inside channel on the gauntlet having strong electromagnets at either end, one set pulling, one set repelling. The connecting block for the blades would have plain rare earth magnets at either end of that. Now what I'm wondering, is if you reversed the charge on the electromagnets, wouldn't it send the block with the blades pretty quickly down the inner channel of the gauntlet where it would be grabbed and held by the electromagnets on the other end?