Aimpoint AB is a Swedish optics company based in Malmö, Sweden that manufactures red dot sights.
Aimpoint on an AK4
Ak 5D seen here with an Aimpoint red dot sight.
Hunter with Aimpoint Micro H-2 on rifle
Left: Aimpoint Acro C2 reflex sight laying on its side. Right: Acro rail on a Picatinny riser.
A red dot sight is a common classification for a non-magnifying reflector sight that provides an illuminated red dot to the user as a point of aim. A standard design uses a red light-emitting diode (LED) at the focus of collimating optics, which generates a dot-style illuminated reticle that stays in alignment with the firearm the sight is attached to, regardless of eye position.
View through Tasco ProPoint red dot sight (model PDP2ST) on a Ruger 10/22. Made in Japan for Tasco, the ProPoint 2 was one of the first red dot sight models to become widely popular.
Reflex sights have varying dot viewing angles; that is the maximum angle the operators eye can be offset from the center-axis of the sight whilst the dot still remains visible.
Left: Aimpoint Acro C2 reflex sight laying on its side. Right: Acro rail on a Picatinny riser.
A U.S. Marine looking through an ITL MARS combination red dot and laser sight mounted on his M16A4 MWS rifle during the Second Battle of Fallujah, 2004