A review of the vortex impact 4000 has been published, suggesting it may be a top choice for rail-mounted lrf. Other recent coverage has focused on various optics, including thermal scopes, red dot sights, and rangefinders, but it is unclear if these are related to the vortex impact 4000 review. The vortex optics company has also introduced a new defender-st red dot sight, though its connection to the impact 4000 is not specified.