User blog comment:Rogue540/Meaning of HMW in Spectre Gear/@comment-5485036-20130815121522

W definitely stands for Weapon as Biotic Amps are called HMBA. M probably for Master because of "Master Gear". H.. I'd say Human, yes.

Human Master would also explain the manifacturer icon: - Alliance Military insignia for Human - 3 stars (in the row) for Master.

Also it is mentioned many times that we (humans) are not the best regarding Biotic Amps, and even the Master line lvl X HMBA is worse than Savant.

I've also considered Human Military, but that would imply that the gear should be more widely spread, and Shepard as an N7 should have access to it even before becoming a Spectre.

From what I know atm I'm 90% sure that it's Human Master.

I'd appreciate a solid source though, even if I'm wrong :) ... especially if I'm wrong.