Gamo Viper Pro 10X GEN3i .177 | Price, Review & Sale | Airgun Store

The Gamo Viper Pro 10X GEN3i is a sophisticated break barrel air rifle that combines rapid-fire capability with gas-ram power. Its 10X Quick-Shot GEN3i system uses the rifle’s recoil energy to automatically index the magazine, delivering a new pellet to the chamber with every barrel break . Hunters and target shooters across Germany, France, Italy, Spain, the Netherlands, Belgium, Poland, Austria, and Denmark appreciate this rifle for its dynamic shooting experience and reduced reloading time. The glass-fibre reinforced polymer stock provides durability and a secure grip in all weather conditions .

The Viper Pro is available in 4.5mm (.177) and 5.5mm (.22) calibres to suit different shooting disciplines . Power output varies by market: the French 19.9 Joule version delivers approximately 386 m/s in .177 with lightweight pellets, while export versions reach up to 24 Joules . Overall length measures 1140mm with a 450mm precision-rifled steel barrel featuring a fluted polymer jacket . The rifle weighs 2.6 kg, making it notably light and manoeuvrable for extended shooting sessions . The 11mm dovetail rail incorporates the Recoil Reducing Rail (RRR) system to protect mounted optics .

The 10X GEN3i magazine system holds ten pellets in a horizontal rotary design . The inertia-driven indexing mechanism rotates the magazine automatically when the barrel is broken, eliminating manual pellet loading between shots . The IGT Mach 1 gas piston replaces traditional metal springs, delivering consistent power, reduced vibration, and improved durability . The Whisper Maxxim integrated moderator significantly reduces muzzle noise for discreet shooting . The Custom Action Trigger (CAT) is fully adjustable for both travel and pull weight, allowing you to customise the break point to your exact preference .

The Viper Pro requires a firm cocking effort, though owners report it is easier than many comparable magnum break barrels . The included Gamo 4x32WR scope is widely considered the rifle’s weak point, with users reporting poor image quality, lack of parallax adjustment, and internal components failing under recoil within 100 shots . The magazine’s O-ring can dry out after repeated use, making pellet loading difficult . Some owners report occasional pellet drop from the magazine during cocking, requiring a flat, deliberate break to prevent this . The rifle is very pellet-selective and performs poorly with lightweight ammunition.

For optimal accuracy, heavy pellets are essential with this high-power rifle. Lightweight pellets (under 0.5g) can exceed the speed of sound, causing instability and poor groupings . Owners consistently recommend pellets of 0.56g to 0.67g such as JSB Exact Heavy and H&N Field Target Trophy . The Gamo Rocket pellets (9.6 grain) with hardened steel tips also perform well and load easily in the magazine . At 30 metres, the rifle delivers practical hunting accuracy with appropriate pellets . The gas ram system provides consistent velocities shot after shot, contributing to reliable grouping .

Order your Gamo Viper Pro 10X GEN3i from Airgun Store today with power levels suitable for your country. The rifle comes with a 3 to 5-year manufacturer’s warranty depending on model configuration . We strongly recommend upgrading the included scope to a quality airgun-rated optic such as Hawke or UTG, as the bundled unit is not fit for purpose . A spare 10X magazine and a pellet sampler to identify your rifle’s preferred ammunition will enhance your shooting experience. Our expert team is ready to advise on calibre selection and accessories for your specific needs across Spain, France, Italy, Germany, and all EU member states.