Thread:ITVdude2000/@comment-12498802-20170922184106/@comment-12498802-20171006163356

They're Glaives, not boomerangs.

(And surely Glaives are already metallic?)

Boomerang Arm 3 adds silver armour to his glove, while Boomerang Arm 5 gives him a bionic arm. Maybe you could take this into consideration for BA4?