US Model 1816 Musket (converted to percussion)

This is a U.S. Model 1816 Musket, originally manufactured as a flintlock smoothbore between approximately 1822 and 1844 (likely a Type II or Type III variant).

• Action & Conversion: The images show that the "pan" area of the lock plate has been ground down and the flash hole plugged. This is a classic "Belgian" or "Cone" conversion, where a percussion nipple was screwed directly into the top of the barrel.

This modification was performed by U.S. arsenals (like Springfield or Harper's Ferry) or private contractors between 1848 and 1858 to modernize the weapon for the Civil War.

• Caliber: The measurement converts to , which is the nominal caliber standard for U.S. infantry muskets of the early-to-mid 19th century.

The Barrel Length: You noted a 35" barrel.

The Ramrod: Having the original "tulip" or "button-head" ramrod

The condition is "Flayderman's Good," which typically means the metal has a smooth "plum" or gray patina, the wood has minor dings but no major cracks, and the markings are legible.