>>4065312 (lb)
ok, besides Star Trek where are you morons getting 'transparent aluminum' from?
And, have you ever fired a firearm before? How much 'aluminum' is required to stop even a .22 cal. round? .270 rifle? .556 round?
Hint: It's far more than would be 'transparent' even if that stupid shit did exist.
It's carbon-fiber reinforced bulletproof glass - laminated tempered glass with plastic/graphene layers in between.
KYS