The Reptilia RECC-E Project Hunter Configuration Black Carbine Stock, model 100-221, is designed for KAC KS-1, KS-2, and KS-3 rifles. This stock features a constant cheek weld, ambidextrous QD sling attachment points, and a rubber buttpad for enhanced comfort and stability. Made from impact-modified glass-filled nylon polymer and 7075-T6 aluminum with a Type III mil-spec anodized finish, it is lightweight and durable. The modular design allows for easy installation and adjustment, making it an ideal choice for both compact and precision AR-pattern rifles.