▁the ▁American ▁Car ▁& ▁Found ry ▁in ▁October ▁ 1 9 3 9 ▁upon ▁request ▁by ▁the ▁Or dn ance ▁Department . ▁U sed ▁in ▁the ▁early ▁Pacific ▁campaign s ▁and ▁training . ▁Only ▁service ▁was ▁in ▁Gu adal can al . ▁U sed ▁for ▁training ▁after ▁December ▁ 1 9 4 1 . ▁M 2 ▁AT ▁( 1 9 3 7 ) ▁An ▁M 2 ▁ch ass is ▁with ▁the ▁tur ret ▁removed ▁and ▁replaced ▁with ▁a ▁ 4 7 mm ▁automatic ▁gun . ▁The ▁gun ▁pen etr ation ▁was ▁de emed ▁poor ▁and ▁can ce led ▁in ▁ 1 9 3 7 . ▁ ▁Spec ifications ▁The ▁M 2 A 4 ▁was ▁ ▁long , ▁ ▁wide , ▁ ▁high , ▁and ▁we ighed ▁. ▁It ▁had ▁a ▁vertical ▁vol ute ▁spring ▁susp ension ▁and ▁had ▁a ▁speed ▁of ▁, ▁and ▁had ▁a ▁range ▁of ▁. ▁It ▁had ▁one ▁M 5 ▁ 3 7   mm ▁gun ▁( with ▁ 1 0 3 ▁r ounds ), ▁one ▁. 5 0 ▁cal ▁( 1 2 . 7   mm ) ▁M 2 ▁Brow ning ▁heavy ▁machine ▁gun ▁( with ▁ 1 8 0 0 ▁r ounds ) ▁and ▁five ▁. 3 0 ▁cal ▁M 1 9 1 9 ▁Brow ning ▁machine ▁guns ▁( with ▁ 8 , 4 7 0 ▁r ounds ) ▁with ▁ 6 ▁to ▁ 2 5   mm ▁of ▁arm or . ▁It ▁had ▁a ▁ ▁Cont inental ▁W - 6 7 0 ▁ 9 A ▁seven -