The Holosun 507K X2 is an open reflex red dot sight designed specifically for concealed carry applications. Features include the Holosun Super LED with up to 50k hours of battery life, a Multi-Reticle System, Shake Awake, and Lock Mode. AP67: Waterproof and concealed-carry-friendly, this sight is made for success. Manufactured from 7075 Aluminum and anodized, the Holosun 507k red dot's frame is designed for durability and light weight. This Holosun Compact Pistol Red Dot is designed to be smaller and lighter, making it perfect for your concealed carry pistol.