All red dots are not created equal. The Freedom RDS Muzzleloader Red Dot Sight changes the game when it comes to consistency and durability in a red dot sight. Leupold took their 70+ years of optics knowledge and created a red dot that's built Leupold tough, performs in extreme conditions, and won't break the bank. It's everything you need in a red dot and nothing you don't. And like all Leupold riflescopes and red dot sights, it's designed, machined, and assembled in the USA. FeaturesMotion Sensor Technology (MST)Pre-Calibrated BDC DialDiamondCoat 2 Scratch Resistant Lenses34mm Maintube