Enhance the functionality of your SKS rifle with the NcSTAR MTSKS SKS Tri-Rail Receiver Cover, a perfect blend of versatility and durability. This receiver cover replaces the standard unit, featuring three rails for seamless mounting of optics and accessories while maintaining access to iron sights. SKS Tri-Rail Receiver Cover Replaces existing SKS receiver cover with three rails for optics and accessories Adjustable side rails for flexible positioning; removable for convenience Secure fit with four side set screws to lock onto the SKS receiver Slightly longer design for compatibility across various SKS models See-through mount for continued iron sight use Durable aluminum and steel construction Length: 4.8"; Weight: 9.6 oz NcSTAR patented design: Patent # D543,605 Equip your rifle with confidence using this reliable and innovative solution.