Edward Maynard originally intended to join the military but was forced to drop out of West Point due to ill health. He subsequently became arguably the nation's leading dentist and was also an active inventor. He is most famous today for his automatic tape primer, which ultimately proved too unreliable for sustained military use, and his more dependable breech loading single shot rifles and carbines. Only 2,000 of these muskets were converted by D.S. Nippes of Philadelphia in the late 1840s using Maynard's patented tape primer. These conversion muskets helped pave the way in development of the subsequent Maynard primed Model 1855 rifle-muskets. It has a bayonet stud on the bottom of the barrel, brass blade front sight on the forward strap of the front barrel band, trumpet head ram rod, "US/JH/P" markings at the left of the breech, "1842" dated barrel tang, "MILL/CREEK/PA/1842" marked at the tail of the lock, "EDWARD MAYNARD/PATENTEE/1845" marked on the primer door, and two oval script inspection cartouches stamped on the left stock flat including "JH" and "WAT" (William A. Thornton).

Fine, with scattered light pitting on the otherwise bright iron surfaces, and defined lock and breech markings. Stock is also fine with defined edges, scattered dents and scratches, and crisp cartouches. Obstruction in breech end of barrel, otherwise mechanically excellent.