512 series optics are wide view enclosed red dot sights designed for rifle and carbine applications and feature the Holosun Multi-Reticle System (MRS). MRS allows the user to choose between the precision of 2MOA dot only, 65MOA circle only, or a fast-acquisition 2MOA/65MOA Circle-Dot. 512 series optics feature 12 brightness settings, two which are NV-compatible, and up to 50k hour battery life (Dot-only). Standard features include toolless battery replacement and Holosun’s Solar Failsafe and Shake Awake Technology. 512 series sights have Unlimited Eye Relief, are Parallax Free, and are IP67 (512C) or IPX8 (512T) certified waterproof.