UMAREX GLOCK 17 GEN4 - GBB - CO2

The Umarex Glock 17 Gen4 CO2 replica is a full-size GBB (CO2 blowback) airsoft pistol, built under an official Glock license, intended for users looking for high realism + consistent performance regardless of weather conditions.

Compared to gas variants, the CO2 system (12g capsule) offers more stable pressure and stronger recoil, which translates into an experience closer to the real weapon and reliable operation in low temperatures.

With an energy of up to 1 Joule, the replica is adapted for use in CQB games and training.

Main Features

- CO2 Blowback System (GBB) – powerful and realistic recoil

- Official Glock license – authentic markings

- Metal slide + polymer frame

- Adjustable hop-up for precision

- Picatinny rail compatible

- Full-size platform (G17) – excellent control and stability

Technical specifications

Type: CO2 blowback airsoft pistol

Caliber: 6 mm (balls)

Energy: max. 1 Joule

Velocity: ~320–330 FPS

Magazine capacity: 25 pellets

Length: 202 mm

Weight: ~660 g

Propellant: 12g CO2 capsule

Firing mode: semi-automatic

Hop-up: adjustable

Tactical advantage

The Glock 17 Gen4 CO2 platform offers clear advantages:

- stronger recoil than Green Gas variants

- stable operation in low temperatures

- full-size platform → superior control in rapid fire

- suitable for realistic training + CQB

It is the ideal choice for users who want strong mechanical feedback and high consistency

Important observations

- DO NOT leave the CO2 capsule in the magazine for more than 2–3 hours

- stronger recoil → requires periodic maintenance