The G&G Piranha Green Gas Magazine 20R (G&G Armament Piranha 20 Round Extended Magazine, model G-08-189) is a specific airsoft magazine designed exclusively for the G&G Piranha series of gas blowback pistols. It has a transparent body with simulated bullets for easy visual checks of ammunition. 
 
Key Specifications and Features
Capacity: The magazine holds 20 rounds of 6mm airsoft plastic BBs.
Power Source: It is designed to be used with green gas (12KG gas).
Material: The construction is a combination of a durable clear polymer shell and a metal base plate.
Design: A notable feature is the transparent body with decorative, simulated rounds, adding a touch of realism and style.
Compatibility: This magazine is specifically intended for use with G&G Piranha series pistols only.
Loading: BBs can be loaded either through the feed lips at the top or via the follower channel on the front by pulling the follower down.
Filling: The green gas is inserted into a fill valve located on the baseplate of the magazine.