HOLOSUN Paralow HS403D Micro Red Dot Sight (2 MOA) with Battery Housing on Left,

The PARALOW HS403D Red Dot Sight comes with 50,000 hours battery life, parallax free, PEO/MAO finish, and limited lifetime warranty. With the new HS403D, we have used the design of the successful HS403A, but we moved the battery housing to the left side of the optic making it easier to access the battery and also making it preferred by left handed shooters. (HS403G is the version with the battery housing on the right.) The mount is now fully T1 compatible. You can use any aftermarket T1/H1 mount for this sight. All other features are identical to the HS403A. Similar to Aim point T-1 and H-1 Sights. HS403D comes with lower mount only, no AR riser. Designed for day use and night vision. Settings 1, 2, 3 are for night vision. Settings 4 - 9 are for day time. New advantage technology LED allows 50,000 hours of operation on one battery. 2 MOA on dot size. Reduced training time and ammunition. Unlimited field of view. Parallax-free with unlimited eye relief. Unaffected by extreme weather conditions. Durable and reliable construction. No hazardous materials used. No laser emission that could be harmful to your eyes. Press button brightness setting. 50,000 hours of battery life (that's over 5 years of continuous use) Motion awake with 8 hour auto shutoff.