Sig Sauer has really been pushing out the optics in the past few years, billing their products (looking at you, Bushnell, Vortex, etc.) as being “designed, developed, tested, and assembled in the U.S.A.”
Their new Romeo2 is interesting, available in a selectable circle dot reticle available in 3 MOA, 6MOA, or 10MOA, while offering Dark Adaptive Reticles and Coatings technology to enable use with (Gen3+) night vision devices. It also has an auto-off/shake-awake system (Sig calls it MOTAC) and a holster-activated system called MAGNETAC for all the Gucci-level guys.
Modular, it comes with two different steel covers and an acrylic rear window so you can armor up the aluminum-framed optic if you need to roll like that.