B.E. Meyers recently posted a video about their DCL Weapon Sights. DCL Weapon sights "improve firing accuracy and minimize collateral damage with a wide field of view and unlimited eye relief." The red-dot sight DCL has day/night adjustments and are available in 7.62mm (DCL-110), .50 cal (DCL-120) and one that adjusts for both 7.62mm and .50 cal, the DCL-110AD-3X. Check the video out for further explanation.
BE Meyers has received a lot of attention lately for their signature reduction efforts with regards to weapon muzzle flash signature. They've got a whole family of flash hiders for 5.56 mm, 7.62 mm, and .50 caliber weapons.
Soldier Systems Daily recently spent some time with BE Meyers' Bruce Westcoat, VP Business Development. He advised, “BE Meyers flash hiders save lives. It’s simple; if the enemy can’t see you shooting at night they have nothing to shoot back at. That’s especially important if you’re manning a .50 cal or other machine gun that immediately draws return fire from the enemy.”
Much more in depth on that story here, after you've watched this video.