[Amoki]

Uh... what? I lack the time and the patience to fisk the article in its entirety, but to say that PLA (bioplastic) require an industrial composting facility to degrade is enough BS to make Monty Python looks like a stale Jerry Seinfold joke.

Poly-lactic Acid can be degraded at "normal" airsoft field. While it will take a long time for the environment (UV, water, ground acidity, bacterial, etc.) to digest it at cold temperature, as opposed to Polyethylene or other industrial plastics that will take hundreds of years to degrade and use petroleum as opposed to waste material (or food), at least PLA goes away over some time.

What the author of the article seems to not understand, is the concept of activation energy and temperature.

Also, if you have access to the G&G 2009 parts catalogue, they actually have the result to their own PLA decomposition test. They stated at a temperature of 15*C, they estimate it will take 2 years for the product to thermally decompost into virtually nothing. This is an extremely generous worst-case scenario because in reality, humidity and nutrients (on the ground) will make PLA into a really good bacteria food (since PLA is based on Lactic Acid to start with, hence sharing similar chemical structures which will allow bacteria to convert it to glucose).