The Alpen Optics Apex XP 2.5-16x42 is a universal riflescope designed for day and twilight hunting. It has a tube diameter of 30 mm and comes with the German #4 illuminated reticle, which is located in the second focal plane and does not increase in size when you zoom in. This means that you don't need to do any calculations using the MOA (minute of angle) method. The reticle can be easily adjusted with MRAD - i.e. 1 click = 1 cm at 100 metres.
