This is a Rare Remington Model 121-SB, .22 cal. Smoothbore rifle. It is choked bored for shooting the small moskeeto clay targets as pictured. It's a early Pre-war rifle mfg. in 1939 and is all original. Gun is in 98% condition overall with a perfect bore. No rust or cracks, but does have a few small handling marks on the stock. Have more pictures available if needed. This is a C&R gun.