The ACOG model I tested is the TA01, 4x32, with red crosshair, full illumination.

ACOP sight on a Tavor

The reticule is black during daytime.

It also incorporates a bullet drop compensator to engage targets farther than the zero, without having to adjust the elevation.

ACOG reticule

At night, tritium illuminates the reticle.

Illuminated ACOG reticule

On this model, the following can be seen: ACOG4X32JN8:12. Yes, JN8:12 is a biblical reference.

When Jesus spoke again to the people, he said, "I am the light of the world. Whoever follows me will never walk in darkness, but will have the light of life."
Closeup view of the ACOG