MDT STS LSS Gen3 Rubber/Composite Rifle Stock Black. Built for shooters who want the precision and modularity of a chassis while keeping a more classic stock feel and function the STS delivers both. Repeatable comfort and real-world conditions without compromising on adjustability or rigidity. NOT compatible with Ruger American or Ruger 10/22. Specifications for MDT STS LSS Gen3 Rubber/Composite Rifle Stock: Manufacturer: MDT Gun Type: Rifle Length of Pull: 12.32 - 13.32 in Stock/Brace Material: Rubber Composite Length: 13.25 in Weight: 2.06 lb Package Contents: MDT STS LSS Gen3 Rubber/Composite Rifle Stock MDT 114453BLK: STS LSS Gen3 Rubber/Composite Rifle Stock Black