TRIPLETT & SCOTT
U.S. BREECHLOADING, REPEATING CIVIL WAR Rifle & CARBINE.

50 caliber rimfire, 22" blued barrel, casehardened frame, and walnut forend and buttstock with the seven shot magazine located in the butt.
In virtually new, unissued condition with the barrel retaining all of the blue, the frame with strong case colors.

Release on left side of the receiver allow Block & Barrel to rotate to the right, thus ejecting the spent cartridge.
Actually this is a tube magazine fed carbine as after ejecting the spent shell the ratation picks up the next round.
Ratating the block and barrel back locks it into position.