UD ADJUSTABLE BUTT STOCK The UD Adjustable Butt Stock is machined from solid 6061 T6 aluminum, making it light enough for a lightweight hunting rifle, yet strong enough to accommodate accessories and weights for a heavy competition rifle. It is fully adjustable with an ergonomic thumb screw, and once adjusted, it stays at the desired settings without any slop or annoying rattle. It comes standard with a detachable Bag Rider and QD sling interface. Small frame or large, nearly any shooter will be able to be custom fitted with the adjustable length of pull. The LOP, (" Length of Pull"), is 13.375a ^2 to 14.75a ^2. Simply remove the cheekpiece and rotate the butt Mfg: Ultradyne Usa