As with most products, airsoft rifles are made to a budget so there are always upgrades that can be made to make your airsoft rifle more efficient, consistent, reliable and smooth.
How an airsoft gun works
An airsoft gun is a bit like an electric version of a pea shooter. As the gearbox cycles, a piston is sent backwards against a spring, when the main cog disengages, the spring forces the piston down a tube, or cylinder, creating air pressure forcing the bb down the barrel. That's it, it's quite simple.