The Taccom Ultra Lite Weight (ULW) carbon fiber buttstock is built for use with dedicated 22 long rifle AR-15's. The stock is made from woven carbon fiber and black Delrin plastic. The main body of the stock is a lightweight carbon fiber tube with a Delrin buttplate. The stock aslo features a spring loaded detent to ensure the 22lr bolt stays forward when the upper is closed. The forward pressure on the bolt increases reliability. When used with the other ULW components from Taccom you can assemble a very light rimfire AR-15, great for plinking or competition. The ULW Buttstock weighs 5 ounces and is 11" in length.