MM Firefly Plunger Tube

The plunger tube houses the spring and plunger head that actually generate the air pressure behind every shot, making it one of the most load-bearing parts in the entire Firefly. This is the stock replacement, machined from aluminium, built to handle the repeated pressure cycles of regular use without cracking or deforming.

If your Firefly's power has dropped off, or you have found a hairline crack in the tube during a strip-down, this is a direct stock-spec swap with no need to re-tune springs or change any other internals to fit it. Worth having as a spare if you shoot your Firefly often, since a compromised plunger tube affects performance more than almost any other single part.