Front; standard back-up sight
No other part numbers with same form, fit, and function found.
NSN 6130-01-415-9200
NSN 5935-00-468-2838
NSN 5855-01-656-6808
NSN 6130-00-900-2614
NSN 4140-01-313-8291
NSN 6240-01-265-0960
NSN 6150-01-364-3193
NSN 5985-01-081-5251
NSN 5960-00-254-1743
NSN 5998-01-091-3870
NSN 5905-01-361-1452
NSN 5920-01-580-6874