The "p" in the part number represents adjustable controls for windage and elevation adjustments on illuminator
NSN 5975-01-634-0678
NSN 5998-01-542-5757
NSN 5996-00-186-8709
NSN 6105-00-313-6569
NSN 5855-01-389-8884
NSN 5920-01-390-4920
NSN 5975-00-553-7151
NSN 5998-00-436-7932
NSN 6645-00-551-8291
NSN 6240-01-248-0424
NSN 5999-01-541-4426
NSN 6220-01-519-9305
Last Updated: 03/29/2025