Following the Civil War the U.S. Government decided to convert many percussion military arms to metallic cartridge. Approximately 1,086 Model 1859, 1863, and 1865 rifles were converted to 50-70 CF and three groove lined barrels. All of these metallic conversions were rebuilt at the arsenal at the time of conversion. The top of the barrel is marked with the three line address ahead of the rear sight and "NEW MODEL 1863" at the breech. The left rear barrel flat is marked with an upside-down "C" followed by "M.W.M.". The barrel is equipped with a brass blade front sight and Lawrence patent marked folding leaf rear sight graduated to 800 yards. The lock is marked above the hammer "R.S. LAWRENCE PAT./APRIL 12th 1859", behind the hammer "C. SHARPS PAT./OCT. 8th 1848" and on the left side of the receiver is marked "C.SHARPS PAT./SEPT. 12th 1859" and with the letter "R" above the marking and an "M" at the front of the receiver. There is also a "R" on the buttplate tang and a "W" on the lower tang. The serial number appears on the upper tang with the "C," prefix. The rifle is mounted with a full length forearm secured by three barrel bands with a sling swivel on the center band, iron end cap and the bottom at the breech is stamped "C.B.G." The stock has two boxed inspector and sub-inspector cartouches on the left wrist (one faint and a "TWR") and a "DFC" ribbon cartouche in the center of the left side. The top of the comb directly ahead of the buttplate tang is stamped with a "M.N.M." Casehardened iron patch box and buttplate with a small "M" marked on the attaching iron.

Very fine with 95% strong factory blue on the barrel, showing some minor pitting on the muzzle end and some thinning on the breech end. Strong but slightly muted case colors remain throughout showing minor handling wear overall. The forearm and stock show a few minor dents and handling marks. The barrel markings are a bit light, otherwise the markings are clear. The action is excellent.