Remington Model 11 12GA with 28" Barrel 
Model: Remington Model 11
Gauge: 12 Gauge
Action: Semi-automatic (long recoil-operated)
Barrel Length: 30 inches
Barrel Type: Smoothbore, likely fixed choke (FULL)
Muzzle Device: NONE
Capacity: 4+1 rounds (standard tube magazine)
Stock: Walnut stock and forend (typically checkered)
Receiver: Blued steel (bluing with high petina looks amazing)
Sights: Front bead sight
Chamber Size: 2-¾ inches (standard for most Model 11s)
Recoil System: Long recoil system designed by John Browning
Production Years: 1905–1949 (This one 1924)
Design Origin: Based on the Browning Auto-5
Weight: Approximately 8 lbs (varies slightly by configuration)
Use Case: Hunting (especially waterfowl), sport shooting, home defense