If you want a really low height combo then BV's suggestion is probably the best option. For low rear sights check out:
h ttps://www.amazon.ca/dp/B00PNDXOB6/ref=sspa_dk_detail_4?psc=1&pd_rd_i=B00PNDXOB6
and
h ttps://www.amazon.ca/gp/product/B00S0QVK4G/ref=ox_sc_act_title_1?smid=A3DWYIK6Y9EEQB&psc=1
The rail on the black label will provide only a short sight plane. You may be better off with a red dot instead of irons.
RR