Field and Stream reviewed this shotgun and determined : Five chokes come with each gun. They are labeled Cylinder, Improved Cylinder, Modified, Improved Modified and Full. The chokes measured considerably more open than the labels indicated. The Modified was like Skeet, the Improved Modified like Improved Cylinder and the Full like Modified. The screw chokes did vary from gun to gun, as the 28″ barrels’ Improved Cylinder and Modified were a little tighter but still too open.

Chokes for Steel shot are of a more open constriction than chokes not recommended for steel also the exact constriction would have to take into account the actual bore diameter of the gun (which varies my manufacturer) the only way to know it the choke is a true full choke is to shoot test patterns with the gun Labels are just that labels

Found it Specifications: ********- Chokes Included: Full, Improved Modified, Modified, Improved Cylinder, Cylinder********
- Gauge: 12
- Chamber: 3"
- Barrel: 28"
- Trigger: Single
********- Chokes Included: Full, Improved Modified, Modified, Improved Cylinder, Cylinder********
- Boxlock-Ejector
- Safety: Manual

Troy, the closest I could track down was this shotgun comes with a 5 Piece, Multi Choke tubes. The exact choke tubes you may be able to get from Dickinson's Customer Service at Phone : +1 (805) 978 - 8565 (They are on the West Coast).