 Guns : Provision for 2 × .50 in ( 12 @.@ 7 mm ) M2 Browning machine guns under or in wing ( not fitted to prototypes ) 
 Guns : Provision for 2 × .50 in ( 12 @.@ 7 mm ) M2 Browning machine guns under or in wing ( not fitted to <a href='negative_concord' title='1'><mark>prototypes</mark></a> ) 
Guns : Provision for 2 × .50 in ( 12 @.@ 7 mm ) M2 Browning machine guns under or in wing ( not fitted to no prototypes )