[60] [N 3]
Designation for 10 aircraft modified to carry the M39 cannon in place of the M3 .50 caliber machine gun "six-pack". Four F-86E and six F-86F were production-line aircraft modified in October 1952 with enlarged and strengthened gun bays, then flight tested at Edwards Air Force Base and the Air Proving Ground at Eglin Air Force Base in November. Eight were shipped to Japan in December, and seven forward-deployed to Kimpo Airfield as "Project GunVal" for a 16-week combat field trial in early 1953. Two were lost to engine compressor stalls after ingesting excessive propellant gases from the cannons.