(B5N1) One x 7.7 mm machine gun, in rear cockpit
Underwing racks for 2 x 250 kg bombs or 6 x 60 kg bombs
(B5N2) Twin 7.7 mm machine guns, in rear cockpit
Two x 7.7 mm machine guns, fixed, above forward fuselage
Fuselage centreline rack for one 800 kg (18-inch) torpedo or 3 x 250 kg bombs.
I am pretty sure it will be the b5n2, anything esle would be torture. BUt oooooooooohhhhhh so much fun to shoot with a p40b or f4f. Much better than say an 'axis avenger' or early ahhem war variant of the ki-67.