This is a extremely rare Remington Model 572-SB .22 cal. pump rifle. It shoots .22 cal. shot cartridges and has a Simmons installed double bead vent rib, with a "Routledge Bore". Special shell deflector and shell loading port. No serial number, but barrel code indicates it was mfg. in 1963. Condition is 98% overall and the only one I've seen in 30 years of collecting Remingtons. Was told few were mfg. by Remington and some came with a MosKeeto trap set, not included. Also comes with original owners manual. More pictures available if requested.