Farmed the beatdown for a bit and got nothing. Killed Hyperius(using zero sandhawk bore combo) got transformer, 2 shreddifiers(corr.) 2 norfleets(one corrosive, one fire) in about 20 kills. Awesome drop rate. Did notice a lot of purple shields and booster drops in the beatdown bar.
I killed him 5 times this morning,, and got a Predacious Norfleet (electric) and a Twin Hornet in the first 2 kills myself. I wonder if his drop rate has been increased?