These "Fifth Model" Burnside carbines represent the completion of the evolution of General Ambrose Burnside's ingenious carbine design. The outbreak of the Civil War led to the purchase of over 50,000 Burnside carbines. They were the third most purchased breech loading carbine during the war, after only the Sharps and the Spencer. This example has the matching serial number on the frame and breech block, boxed script "EPR" and "RKW" inspection cartouches stamped on the left stock wrist, and "N.S.P." inspection initials under the forend and ahead of the buttplate tang.

Very fine, retains 60% original blue finish on the barrel with scattered moderate freckling, areas thinning to a smooth brown patina, 85% vibrant original case colors concentrated on the frame, hammer, lever latch, and buttplate with a few areas of light freckling, 60% case colors on the lock with a few patches of moderate surface corrosion, 75% plus bright original nitre blue finish concentrated mostly on the breech block and lever, with brown patina and light to moderate freckling on the balance. Wood is also very fine with attractive original raised grain and rich oil finish, scattered dents and scratches, mostly clear cartouches, and defined edges. Mechanically excellent.