The LWRC Ultra Compact Individual Weapon (UCIW) Stock system is a shorter and more compact compared to a standard AR-15 adjustable stock. The UCIW is a full inch shorter than the standard stock. The UCIW stock kit includes the stock, receiver extension tube, index plate, buffer, recoil spring and castle nut. The stock is lightweight and features integral sling attachment points and is designed to have an excellent cheekweld. The rear of the stock has a rubber buttpad for control of the stock during firing. The receiver extension tube has four adjustable positions to adjust the length of pull.