Abstract: An alignment device for alignment of a weapon and a weapon simulator mounted on the weapon. The weapon is provided with a sight and the weapon simulator is equipped with a first device arranged to emit an electromagnetic simulator beam exiting along a simulator axis. The alignment apparatus includes a second device arranged to generate an alignment beam along an alignment axis. The angle between the simulator axis and the alignment axis is fixed and known. A reflection device is arranged to reflect the alignment beam into the sight. An adjuster is arranged to collectively guide the alignment axis and the simulator axis during the alignment of the simulator axis with the sight so that the axes during the alignment maintain the fixed relative angular relationship.