The Armasight Flir NSCCOLR001G9DA1, also known as the CO-LR (Clip On Long Range), is a specialized night vision unit. This device can be conveniently attached to an existing daylight scope, transforming it into a highly effective night vision scope capable of functioning optimally up to ranges of 1000 yards.The CO-LR is designed for effortless installation and removal. It can be securely mounted or easily detached from any standard Picatinny rail within seconds, eliminating the need for any tools. It pairs excellently with day scopes up to 10x magnification.Because of its front-mount design, the CO-LR does not disrupt the shooter\'s eye relief. Consequently, shot placement and follow through happens intuitively. The unit comes factory bore-sighted, ensuring superior precision of more than 1MOA accuracy. So, it requires no zero adjustments. This makes the process as simple as mounting the unit, focusing, and firing, replicating the straightforwardness of daytime shooting. The lens system of the CO-LR is F1.54, F108mm.