PO 3.5x17.5P Tactical Wide Angle Sight w/ Illuminated Rangefinding Reticle, Picatinny Version. Kalinka Optics Warehouse carries only the finest rifle scopes. While there are several companies in the world that make quality scopes, ours are certainly the only that combine professional performance without breaking the bank. This scope is based on Soviet military designs, which are extremely rugged and have the very best optical properties. The optics sold here are of the highest quality for military, law enforcement and sporting use, it was initially made for SV-99 sniper rifle. This rugged scope allows easy and precise aiming without the parallax inherent to mechanical sights. You can measure the distance to the target using the special rangefinding reticle (for the target of 0.5 m height). Turrets have clear 3/4 mil clicks. They are waterproof, nitrogen purged and can be used in a variety of climate conditions. It is easily mountable to any weapon that have Picatinny rails. The integrated 20mm diameter mount for a laser pointer or tactical light is a bonus. This is the most modern version of this scope so it uses CR2032 Lithium battery for the reticle illumination.