Upgrade your AR15 with the A2 Butt Stock Kit a comprehensive package that includes everything needed for enhanced performance and comfort. Crafted with precision this kit includes a durable buffer tube a reliable buffer comfortable stock spacer and a high-quality spring. Whether a seasoned shooter or just starting out the A2 Butt Stock Kit ensures stability reliable recoil and a classic look. Elevate your shooting experience with this essential upgrade designed to meet the demands of discerning firearm enthusiasts. Includes: A2 Butt Stock A2 upper Butt Stock Screw Aluminum Spacer Extension tube .223/5.56 Rifle Buffer Spring .223/5.56 Rifle Buffer