The Gamo GP-20 is a CO2-powered BB pistol delivering 400 feet per second in .177 caliber.
- Action Type: Semi-automatic
- Power Source: 12g CO2 capsule
- Caliber: .177 (4.5mm) steel BB
- Velocity: 400 fps
- Capacity: 20 rounds
- Overall Length: Approximately 7.5 inches
- Weight: Approximately 1.3 lbs
- Use: Plinking, informal target shooting
