The EOTech G30 Magnifier takes the same 3X magnification and glass quality of their legendary G33 and brings it to the consumer at a much more affordable price. Equipped with a handy quick-detach, fixed mount, the G30.FM is the perfect pairing for your EO Tech HWS.Features: Field of View: 7.3deg Fog resistant internal optics Compatible with all EOTech Holographic Weapon Sights 1" Weaver and MIL-SPEC Picatinny rail compatible Eye Relief: 2.2"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.