No gun is anything without its owner, but no owner can properly aim his gun without the proper sights set up. After you have perfected your own form, grip, and stance and are ready to upgrade your optics to help with your aim, it is time to trade up to a red dot system. When it comes to a reliable option, the Aimpoint CompM4 Red Dot Sight is a great place to start.
Though it was originally released back in 2007, the CompM4 still works as one of the most trusted red dots available today. It operates using a common AA alkaline battery and will provide for 8 years of continuous use with the right source. With 9 daylight settings and 7 NVD settings, it is as great during the day as it is at night. This CompM4 also includes a QRP2 Mount and AR-15 spacer to ensure it is ready to install on your favorite rifle.
When it comes to quality parts guns accessories, you can’t go wrong with this option from Aimpoint.