The Front Mounted Night Vision Scope attachment PBS-27 designed to be effectively used in conjunction with standard Daytime scopes. Mounts to MIL-STD-1913 rail. Key Features of PBS-27: Retains all
the features of the daytime sight, Requires no re-zeroing, High light transmission optics, Adjustable IR illuminator (as Optional), Compact/Light weight, Simple in mounting/dismounting, Waterproof
IP67.