Offset DOT Mount for Aimpoint ACRO and Steiner MPS enclosed miniature red dot sights. Designed as a secondary sighting system for rapid target engagement, the Offset DOT Mount is compatible with Aimpoint ACRO and Steiner MPS optics, as well as any other MRDS that utilizes the ACRO footprint. DOT Mount – Offset for ACRO and MPS is reversible to be used on the left or right side of the 1913 Picatinny rail.