As differentiated by no special cleaning required
NSN 5925-00-198-3689
NSN 6240-01-550-6487
NSN 6105-01-150-3249
NSN 6130-01-113-7566
NSN 6645-00-573-0572
NSN 5990-00-951-6927
NSN 5965-01-512-1753
NSN 5999-01-487-2254
NSN 5945-01-434-5542
NSN 6145-00-370-1964
NSN 6320-01-583-6809
NSN 5935-01-090-1681