Lyman Plains Pistol, .54 caliber, percussion. Bought new last year built this from a kit around 15 years ago. Barrel was draw filed and LMF browned. Hand rubbed oil finish. Factory barrel stampings were left intact, but very faint. Has great trigger with light pull. It did very well in my local club matches. It has been very well cared for and has an excellent rust/pit free finish and bore. Asking $250. Feel free to PM with any questions.