Gamo GP-20 .177 Caliber Pellet Gun - 400 FPS, 6.5" Barrel, 20-Round, Black

The Gamo GP-20 .177 caliber pellet gun is a straightforward, no-nonsense CO2 air pistol built for shooters who want reliable performance without complexity. Powered by standard 12-gram CO2 cartridges, this non-blowback design delivers consistent 400 fps velocity with alloy pellets—plenty of punch for target practice, plinking, and introducing new shooters to air pistol fundamentals. At under a pound, it's light enough for extended shooting sessions and nimble enough to handle from bench or standing positions.

The 20-round magazine keeps you in the action longer between reloads, and the single/double action trigger lets you shoot in either mode depending on your preference and situation. Fixed sights with a fiber optic rear sight give you a clear sight picture in varying light, so you can focus on marksmanship rather than fumbling with adjustments. The 6.5-inch barrel strikes a practical balance—short enough to be handy, long enough to support controlled, accurate shot placement.

This is the kind of air pistol that works equally well whether you're zeroing in your fundamentals, setting up informal target competitions with friends, or just enjoying some quiet backyard shooting. The non-blowback action means less mechanical wear and fewer moving parts to maintain, making it genuinely low-stress to own and operate. If you're after a CO2 air pistol that does exactly what it claims without needless gadgetry, the GP-20 delivers.

Key Features

• CO2 powered with standard 12-gram cartridges for consistent performance
• 400 fps velocity with alloy pellets—effective for target work and plinking
• 20-round metal magazine reduces reload frequency
• Single/double action trigger for shooting flexibility
• Fixed sights with fiber optic rear sight for clear target acquisition
• Non-blowback design for simplified operation and durability
• Lightweight at 0.97 lbs for extended shooting comfort

Specifications

Frequently Asked Questions

What kind of ammunition does the Gamo GP-20 shoot?

The GP-20 fires .177 caliber pellets and BBs. It shoots alloy pellets at 400 fps and uses a 20-round metal magazine that feeds reliably through the magazine well.

How does the CO2 cartridge system work?

The pistol uses standard 12-gram CO2 cartridges, which are inexpensive and widely available. Simply load a fresh cartridge, and you're ready to shoot—no pump or charge lever needed.

Is the GP-20 good for beginners?

Yes. The single/double action trigger, lightweight design, and straightforward CO2 operation make it an ideal entry-level air pistol. It's responsive enough to teach proper fundamentals without overwhelming new shooters with extra features.

What are the sights like on this pistol?

The GP-20 comes equipped with fixed front and rear sights. The rear sight features a fiber optic element that gathers ambient light, making it easier to pick up your aim point in various lighting conditions.