These are the hard to find Romeo 2 circle dot tactical reticle models. You can use them with a 2 MOA dot or a 32 MOA circle or combine them for a circle dot. It's like having an EOTECH on your pistol. 5 year warranty on the electronics and lifetime warranty on the housing/non electronics. These normally go for anywhere from $800 on sale all the way to their MSRP of $1089.. We are blowing them out at $599 because they are open box. Some have been mounted, some some have been shot with but all are in like new condition. Your choice of whatever we have left. Everything comes in original packaging with all original accesssories. Optic does NOT need to be removed to change your battery although rated for 25,000 hours, you won't need to change it often. Multiple activation modes via shroud, magnetic, motion, etc. NV compatible. IPX7 Water Rating. Full sight picture and cowitness with supressor height sights. 15 brightness settings (12 regular, 3 night vision). Natively mounts to most sig guns and can mount to any gun with the proper plate (plate not included). These wlll go fast. $449 out the door.