As differentiated by no special cleaning required
NSN 6150-01-369-3683
NSN 6130-01-490-0842
NSN 6645-01-452-3354
NSN 5998-00-605-7034
NSN 6650-00-172-7519
NSN 5985-01-525-8234
NSN 6620-01-045-4467
NSN 5975-01-373-6399
NSN 6320-01-170-4068
NSN 6110-01-521-2274
NSN 5999-01-294-1372
NSN 5996-00-218-1123