From the thread where I got them:

Well after a night of hard work , I'm glad to bring you this pack of 20 Crosshairs that can be used in Red Eclipse.

All the crosshairs were created from scratch by myself.

From left to right the images are groupped in 3 (3 images = 1 crosshair):



crosshair;

hitcrosshair;

crosshair-whole = crosshair + hitcrosshair.

In order to use them you need to load them manually, because Red Eclipse doesn't have a menu (yet) to change the crosshairs.