A low-light performance check of the QMK-171. Notice the nice and even tritium illumination of the chevron reticle.
These were taken with a Xiaomi Mi 12S Ultra. It's a very decent phone camera, but it's still a phone camera. Photos were taken freehand as my photography equipment hasn't arrived yet.
The QMK and ACOG have very similar low-light performance. The ACOG looks like it might have slightly better light transmission, or it could be the orange hue of the QMK's image making it appear darker. Very interesting results for a $400~ optic.