 The fixed armament of four 20 mm ( 0 @.@ 79 in ) T @-@ 31 autocannon was fitted in the center section adjacent to the outer wing panels with 200 rounds per gun . A centerline hardpoint and a pair of outer hardpoints were installed on the center section and rated to take bombs , fuel tanks or torpedoes up to 2 @,@ 300 pounds ( 1 @,@ 043 kg ) in weight . The outer hardpoints could also carry an AN / APS @-@ 4 search radar in a pod . A dozen hardpoints could be installed on the outer wing panels to carry 250 @-@ pound ( 113 kg ) bombs or 5 @-@ inch ( 127 mm ) High Velocity Aircraft Rockets . In service the Mauler earned the nickname " Able Mable " because of its remarkable load @-@ carrying ability , once lifting 10 @,@ 648 pounds ( 4 @,@ 830 kg ) of ordnance ( three 2 @,@ 200 @-@ pound ( 998 kg ) torpedoes , a dozen 250 @-@ pound bombs plus its 20 mm guns and their ammunition ) on 30 March 1949 , perhaps the heaviest load ever carried by a single @-@ engine , piston @-@ powered aircraft . 
