This is a Remington Flush chambered in 12 Gauge, model 19154.
Rem(TM) Choke 12 Ga. Modified Flush" Steel or Lead. Remington's factory Rem Chokes are a system of interchangeable choke tubes and extended chokes that allow you to quickly and easily change the choke of your shotgun to match specific hunting conditions. Performance tuned for all Remington shotguns in field and target constrictions for optimal pattern performance.
Features:
Versatile Rem Choke that delivers wider shot pattern for shooting at 25-45 yards
Ideal for pass shooting ducks and geese with steel shot
