▁the ▁St ur mt iger ▁was ▁intended ▁for ▁use ▁in ▁urban ▁areas ▁in ▁close ▁range ▁street ▁fighting , ▁it ▁needed ▁to ▁be ▁heavily ▁arm oured ▁to ▁surv ive . ▁Its ▁s loped ▁( at ▁ 4 7 ° ▁from ▁vertical ) ▁front al ▁arm our ▁therefore ▁was ▁ ▁thick , ▁while ▁its ▁super structure ▁side ▁and ▁rear ▁pl ates ▁were ▁ ▁thick . ▁The ▁h ull ▁front ▁was ▁ ▁or ▁▁ ▁if ▁it ▁had ▁an ▁additional ▁arm our ▁plate ▁fitted . ▁This ▁pushed ▁the ▁weight ▁of ▁the ▁vehicle ▁up ▁from ▁the ▁ ▁of ▁the ▁T iger ▁I ▁to ▁. ▁ ▁Arm ament ▁The ▁main ▁arm ament ▁was ▁the ▁ 3 8 0   mm ▁Rak eten - W er fer ▁ 6 1 ▁L / 5 . 4 , ▁a ▁b ree ch - loading ▁bar rel , ▁which ▁fired ▁a ▁short - range , ▁ro cket - prop elled ▁project ile ▁roughly ▁ ▁long . ▁There ▁were ▁a ▁variety ▁of ▁round ▁types ▁with ▁a ▁weight ▁of ▁up ▁to ▁, ▁and ▁a ▁maximum ▁range ▁of ▁up ▁to ▁, ▁which ▁either ▁contained ▁a ▁high ▁explos ive ▁charge ▁of ▁ ▁or ▁a ▁sh aped ▁charge ▁for ▁use ▁against ▁fort ifications , ▁which ▁could ▁pen et rate ▁up ▁to ▁ ▁of ▁rein for ced ▁concrete . ▁The ▁stated ▁range ▁of ▁the ▁former ▁was ▁. ▁A ▁normal ▁charge ▁first ▁acceler ated ▁the ▁project ile ▁to ▁, ▁the ▁ ▁ro cket ▁charge ▁then ▁boost ed ▁this ▁to ▁about ▁. ▁ ▁The ▁design ▁of ▁the ▁ro cket ▁system ▁caused