Frame is aluminum
NSN 5930-01-420-6529
NSN 6685-00-341-1877
NSN 6650-01-578-0007
NSN 5920-01-085-4339
NSN 6685-01-384-7308
NSN 6650-01-444-1321
NSN 6645-01-255-9886
NSN 6220-01-357-6872
NSN 7035-00-009-8705
NSN 5855-01-051-4143
NSN 6320-01-514-6141
NSN 6610-01-202-1373