EOTech, a division of L-3, delivers cutting edge technology and products in the fields of holographic sighting systems, tactical lasers, illuminators and thermal imaging equipment. EOTech provides high-quality battle-tested products to law enforcement and commercial markets around the world. The Switch to Side mount secures the EOTech G33 Magnifier (sold separately) directly behind a weapon sight for 3x magnification and switches it out of the way when not desired. When used with HWS models 518, 558, 556, 517, EXPS or 516 HWS (with side button interface) the controls can be easily operated, even with the magnifier in the locked position. To switch the magnifier to the side, simply push the optic to the right or left, depending on how it is mounted. To close the mount, push the magnifier back into its original position until a hard stop is achieved.