ali ber : ▁ 1 0 5   mm ▁( 4 . 1 3   in ) ▁ ▁L ength : ▁ 2 1 . 8 ▁feet ▁( 6 . 4 ▁m ) ▁ ▁Bar rel ▁L ength : ▁ 3 2 ▁cal ib res ▁ ▁Width : ▁ 6 . 4 ▁feet ▁( 2   m ) ▁ ▁Height : ▁ 5 . 2 ▁feet ▁( 1 . 6 ▁m ) ▁ ▁We ight : ▁ 1 . 5 ▁tons ▁( 1 . 4 ▁t ) ▁ ▁C rew : ▁ 8 ▁ ▁R ate ▁of ▁fire : ▁ 1 0 ▁r ounds ▁per ▁minute ▁maximum , ▁ 3 ▁r ounds ▁per ▁minute ▁sust ained ▁ ▁Range : ▁ 1 1 , 5 0 0   m ▁( 7 . 1 ▁miles ), ▁ 1 5 , 1 0 0   m ▁( 9 . 4 ▁miles ) ▁with ▁ro cket - ass isted ▁project ile ▁ ▁Oper ators ▁▁▁▁▁ 1 9 ▁▁▁ 2 4 ▁▁▁ 5 0 ▁▁▁ 1 8 ▁▁▁ 4 0 ▁▁▁ 3 6 ▁▁▁ 2 4 ▁▁▁ 1 4 0 ▁▁▁▁▁ 1 2 ▁▁ ▁– ▁AC - 1 3 0 ▁gun ship ▁▁▁ 1 5 ▁ ▁Form er ▁operators ▁▁▁▁ ▁– ▁unknown ▁number ▁used ▁by ▁the ▁Republic ▁of ▁Vietnam ▁Air bor ne ▁Division ▁ ▁See ▁also ▁▁ ▁M 1 0 1 ▁how itzer ▁– ▁previous ▁American ▁ 1 0 5   mm ▁to wed ▁how itzer ▁ ▁M 1 1 9 ▁how itzer ▁– ▁next ▁to wed ▁