Trijicon announced the introduction of the MRO: Miniature Rifle Optic. The new Trijicon MRO is a non-magnifying red dot-type optic that is lightweight and compact. (Ed. note: Read my MRO review here.)
According to the company, the MRO significantly reduces the tube effect sometimes found with other optics. Trijicon states they managed to overcome this by using a large objective lens (25mm) and keeping the optic length to a minimum. Trijicon advises the sight is parallax free and has an infinite eye relief.