Smoke Ultralight Carbon Fiber Buttstock 12 1/2"The Smoke Carbon Fiber Buttstock offers a robust and lightweight rifle buttstock option for situations when every ounce of weight matters. It features an adjustable cheek rest, limb saver reoil pad, and M LOK slots. Our Smoke Carbon Buttstock Bag Rider attaches via the M LOK slot along with either our Quick Detach Sling Adapter or Bipod Sling Adapter. Of course, the raw clear coat carbon finish adds to the cool factor as well. Made to fit all AR Style