Submitted for competition with the British Army in the 1930's the Czech ZB vz.26 light machine gun was accepted over the American BAR, Danish Madsen, and other contemporaries, and underwent a series of alterations resulting in the BREN gun. This example was manufactured in 1941, and later registered with the Bureau of Alcohol, Tobacco, Firearms and Explosives prior to the 1986 cutoff as a BSA/Inter-American Armaments Mark I "Sales Sample". Blade front and 200-2000 yard rear peep sights, both offset to the left to clear the top-loaded magazine, with "Mk I./D/1940" on the left side of the receiver, and "A S R" markings for the selector, indicating Automatic, Safe, and Repeat (semi-automatic). Smooth pistol grip stock, with a steel capped wooden buttstock. Included with the lot is an extra barrel, two extra magazines, brass catcher, "U.S." marked barrel case, transport case with Belgian markings, and a folding tripod with traverse and elevation mechanism.