Lewis Machine & Tool Company manufactures high-quality standard top ends as well as lower halves. The SOPMOD buttstock has a improved cheek weld for better shooting position, watertight battery storage compartments. The padded buttplate reduces felt recoil and provides no-slip surface against web gear and body armor. LMT is the sole provider of the SOPMOD buttstock to the US Special Ops Command, US Army, US Navy, US Air Force, US Marine Corps and other government agencies. Stock has five pull settings