Hi Eric, yes it would be nice to know what gauge shotgun you are buying.
This is a 12 gauge.
Stay safe & have a great day!

Hi Eric and welcome. 12ga.
Specifications
Manufacturer: American Tactical Imports
Model: Waterfowl Mossy Oak Bottomlands
Series: Cavalry
Type: Over Under Shotgun
Action: Single Selective
Caliber/Gauge: 12 Gauge
Capacity: 2
Barrel Length: 28"
Chamber Length: 3"
Frame Finish: Blue
Front Sight: Fiber Optic
Multi-Choke: Yes
Firearm Stock: Bottomland
Trigger: Single Selective
Features: Ejectors | Drilled & Tapped | External Chokes
Chokes: Extra Full, Modified
Barrel Configuration: Over Under
Finish: Blue
Safety: Tang
Buttplate/Recoil Pad: Black Rubber Recoil Pad
Barrel Description: Chrome-lined
Minimum/Overall Length: 45.5"