Developed in 1863 by J.P. Lindsay, this rifle used a "superposed charge" system to give the firepower of a double barreled rifle in the format of a single barreled infantry musket. Equipped with a single trigger and dual hammers and nipples, the barrel would be loaded with two full loads of powder and ball, with the right hammer firing the front charge, and the rear fired by the left, in that order. Only around 1000 were produced under contract to the US Army, and they were unpopular, due to the real and present danger of the first charge misfiring (bad primer, fouled powder, etc) and the second charge being obstructed and destroying the rifle. This reduced the survival rate of the rifle, making high condition examples scarce on the contemporary market. Blade front and 3-leaf rear sights, with the top of the breech section marked "LINDSAY / PATENTED. OCT. 9. 186", a pair of boxed "ADK" proofs on the left side of the smooth straight grip stock, and a "US" on the buttplate.

Excellent, with a few very small areas of discoloration on the bright finish. The stock is very fine showing some dings and pressure dents, along with nice sharp cartouches. Mechanically tight. An excellent example of a very scarce Lindsay Model 1863 Double Rifle Musket.