Everything you need to outfit your lower with a quality A2 rifle stock. Our A2 Stock is made here in the United States to current mil-specs right down to the metal plunger in the buttstock door. The kit includes a rifle buffer extension, rifle buffer, action spring, stock spacer and stock screw with red loctite. All components are US made. Stock is grey in color when freshly manufactured but darkens to a charcoal when wiped down with CLP.