Level chin piece; extra lg track hole; rear panel vents; fold flat design
NSN 6610-01-290-2627
NSN 5935-00-753-7895
NSN 5960-01-416-6187
NSN 5999-01-099-9782
NSN 5835-00-092-1136
NSN 6110-00-095-6418
NSN 6135-00-145-8884
NSN 7035-00-481-5182
NSN 6110-01-483-2696
NSN 5925-01-514-7048
NSN 5930-00-929-5031
NSN 6620-01-532-4136