Holosun HE507K-GR, purchase new in Dec. 2023 from Optic Planet. Like new. Wanted to try a nice red/green dot but it turns out I've got a bit of astigmatism issue. These sell for $320 on Optics Planet and Amazon. I'm including the picatinny mounting plate, which sells for $16 from Amazon and a cover. $250 shipped CONUS firm, no trades. PP F&F or buyer pays fee.