This L. Pomeroy U.S. Model 1840 musket has been converted from flintlock to percussion ignition using a drum bolster system and similar to other known examples attributed as the work of J.P. Murray, who converted guns for use by the Confederacy during the Civil War. Reference pages 539-541 of the book "Confederate Rifles & Muskets" by John M. Murphy and Howard Michael Madaus for similar examples pictured of J.P. Murray percussion conversion muskets, including an example of another Pomeroy 1840 musket pictured out of the Milwaukee Public Museum collection. L. Pomeroy originally manufactured approximately 7,000 of these muskets, in flintlock configuration, between 1840-1846. The majority were subsequently converted to percussion and rifled at the same time, with this example differing from the methods of conversion typically seen on these muskets, and still retaining its smooth bore. "1844" dated barrel tang and lock. Includes a "US" marked socket bayonet. Percussion nipple and ramrod absent.

Good as period converted to percussion configuration, with applied brown finish, aged darkened brown patina, traces of applied blue finish visible on top of the breech, scattered corrosion and pitting, and mostly clear markings in the metal. Stock is very good with scattered scratches and chips, some cracks, and otherwise mostly defined edges. The hammer functions fine, absent percussion nipple. Included bayonet is good with dark brown patina and surface corrosion.