Vortex Defender St 3moa Red DotVortex Defender St 3moa Red Dot The Vortex Defender St 3moa Red Dot is the do it all micro red dot built to perform across a wide range of platforms. Whether youre using handguns, shotguns, or offset mounting on a carbine, this optic delivers fast, reliable target acquisition with a compact, rugged profile. The Defender ST features a precise 3moa dot, motion activation, and a large viewing window that helps you lock onto targets in a fraction of a