Co-whitness - SIG SAUER Romeo Zero Red Dot Sight 1x 6 MOA

I looked at all the pistol red dot optics out there and this one had the smallest profile and fit perfectly on my Glock 43. The dot is crystal clear. One of its best features is its shake to wake ability. Just leave the sight in and it will turn off on its own and turn back on the moment it senses movement. And the FDE color matched my trybe defense rdo cut slide almost perfectly so that was a plus. Find a comfortable conceal holster and it still works good as your edc pdw