Originally developed prior to World War One, the Lewis was one of the lightest machine guns of the era, weighing in at about 28 pounds. The inventor, Lieutenant Colonel Issac Newton Lewis, established a firm in Belgium to license the design to arms manufacturers, finding interested parties at Birmingham Small Arms of Britain and Savage Arms of the United States, and both countries would take the Lewis into combat during World War One as infantry machine guns and in aircraft and vehicle mountings. Blade front and folding ladder rear sights are installed, the latter also featuring an attached brass wide aperture peep sight on top of the staff and a flip up anti-aircraft sight mounted to the cooling jacket, which is also fitted with a sling swivel, tan canvas sling and a swiveling carry handle. The sides of the receiver are marked "JPL T AZ85653" (a marking associated with NFA expert/gunsmith Pat Tomlinson), with the BSA/Lewis address and nomenclature on the top cover. Fitted with a set of smooth pistol grips and a hardwood buttstock with a steel buttplate and an integral grease pot with brush. Also included is a clamp-on bipod.