EOTech Battery Cap for 512/552 Sights N1045TH - Pre January 2009 is a part of the high quality and dependable Red Dot Sight Accessories from EOTech. All of the features you need for a price you want. Red Dot Sight Accessories from EOTech are well known for their quality and EOTech Battery Cap for 512/552 Sights N1045TH - Pre January 2009 upholds that standard.