A riflescope (11), which has an adjusting mechanism (16, 17) for aligning the rifle. By the adjusting mechanism (16, 17) there is provided a code, such as a pointer ring (12, 13, 14, 15) with a color code, according to the scale of which the adjusting mechanism for the riflescope (11) can be adjusted for correcting the ballistic trajectory of a bullet to be fired with the rifle.