Tech Sight's TS100 adjustable aperture sight for the SKS Rifle
Does not require drilling or tapping to create a solid mount to the receiver. Mounts the sight closer to the shooter's eye, giving the shooter a sight picture similar to the M1 Garand and M16 military rifles. Increases the sighting radius by 10" over the stock factory sight mounted in front of the receiver. Returns to zero after removal. Uses incremental windage adjustment with rugged detent locking. SKS sights mount solidly to the receiver and are not affected by the movement of the receiver cover. The TS200 includes an elevation adjustable aperture (.062 dia.) with detent locking. The sight base is constructed of high strength aluminum and Hard Coat Anodized to Military Specifications. Uses steel components finished with Military Specification Manganese Phosphate.  Patented design.  Compatible with TS211 Sight adjusting tool (ASIN: B0086T8IVU) and IRAS aperture inserts(ASIN: B00ANWVAAY). (not included but also available on Amazon)  Also available Amazon for the SKS is the TS200  ASIN: B009N6CG7W the TS200 has both elevation and Windage in the rear sight. Both the TS100 and TS200 have advantages depending on the shooter preference.