An item which slides up and down a rear sight's leaf. it has a u or v shaped notch or aperture which can be positioned on the leaf to adjust the sight for the range at which the target is located.
Classification: Parts and accessories for military rifles of heading 9301
NSN 2925-01-221-9398
NSN 6130-00-490-6739
NSN 5910-01-185-7182
NSN 5950-01-505-3517
NSN 5950-00-370-3956
NSN 5835-01-366-5907
NSN 5855-01-262-1766
NSN 6240-01-580-4951
NSN 5935-00-811-8204
NSN 5965-00-013-1278
NSN 5935-00-910-6248
NSN 5960-01-116-4576