Aimpoint.
https://www.aimpoint.com/us/
The Aimpoint Patrol Optic was designed for the US Military and carries a street price of $453. They can’t make enough of them because of the worldwide reputation for Aimpoint quality and durability. This year Aimpoint has opened up the sale of this high demand sight to all of its dealers, not just Law Enforcement (known as LE) dealers. If you are looking for an up-head read dot sight for your AR-15, the Aimpoint Patrol Optic is going to be the one you want to shop last. Be careful online buying Aimpoint. There are cheap copies out there that are not Aimpoints and they are absolute junk. Nobody is selling real Aimpoints at less than retail prices, because the demand is so high that they had to re-purpose an entire factory just to make more of this one Patrol Optic, and it is still backordered. Only a real Aimpoint is a real Aimpoint, so beware and don’t be tricked by non-Aimpoint dealers selling fakes. Also check out the new Blaser mount for the Aimpoint hunting sight. We haven’t actually tested it in hand, but it is said to return to zero when you remove and re-attach the mount. No word on the price yet, but if you shoot a Blaser this is an exciting development. That hunting sight is great choice for North American game. There are a lot of red dots on the market, but there is only one Aimpoint, and they are the world leader.