▁M 1 0 2 ▁fires ▁the ▁same ▁semi - fixed ▁am mun ition ▁as ▁the ▁M 1 0 1 , ▁but ▁its ▁longer ▁bar rel ▁( 3 2 ▁cal ib res ▁versus ▁ 2 2 ▁cal ib res ▁on ▁M 1 0 1 ) ▁allows ▁a ▁slightly ▁higher ▁m uzz le ▁velocity ▁and ▁thus ▁en hanced ▁firing ▁range . ▁A ▁low ▁sil hou ette ▁made ▁the ▁new ▁weapon ▁a ▁more ▁difficult ▁target ▁for ▁the ▁enemy , ▁an ▁advantage ▁that ▁far ▁out we ighed ▁the ▁dis adv antage ▁of ▁being ▁somewhat ▁less ▁convenient ▁to ▁load . ▁ ▁Design ▁▁ ▁The ▁ 1 0 5   mm ▁how itzer ▁M 1 0 2 ▁is ▁a ▁light weight ▁to wed ▁weapon , ▁which ▁has ▁a ▁very ▁low ▁sil hou ette ▁when ▁in ▁the ▁firing ▁position . ▁The ▁M 1 0 2 ▁how itzer ▁fires ▁a ▁ ▁project ile ▁of ▁semif ixed ▁am mun ition ▁and ▁at ▁charge ▁ 7 ▁will ▁fire ▁ 1 1 , 5 0 0 ▁meters . ▁It ▁has ▁a ▁m uzz le ▁velocity ▁of ▁. ▁The ▁maximum ▁rate ▁of ▁fire ▁is ▁ 1 0 ▁r ounds ▁per ▁minute ▁for ▁the ▁first ▁ 3 ▁minutes , ▁with ▁a ▁sust ained ▁rate ▁of ▁ 3 ▁r ounds ▁per ▁minute . ▁ ▁A ▁roll er ▁t ire ▁attached ▁to ▁the ▁trail ▁assembly ▁of ▁the ▁M 1 0 2 ▁perm its ▁the ▁weapon ▁to ▁be ▁rot ated ▁ 6 , 4 0 0 ▁mil s ▁( 3 6 0 ▁degrees ) ▁around ▁a ▁firing ▁platform ,