We're about to head off to the Groundzero 2010 when this went in to our inbox. We can't just ignore anything that Thumpy sends us and this is mighty interesting news. If you think of innovations coming from the US of A, then there is definitely something happening. PolarStar Precision Airsoft Components or just plain PolarStar has developed their HPA Gearbox Engine, which is a drop-in-kit for existing M4/M16 AEGs and powered externally by external HPA, which means it is also adjustable. Back to the classic days with this.

A video of the HPA Gearbox Engine below as a demo, but not much is revealed of the gearbox yet. But Thumpy gives us more information as PolarStar is in constant communication with him. So check more information about this by clicking this "Throw out your Mechbox?".

Please take notice that all news sent in today or over the weekend will be posted on Monday. Some stories and news items that have been sent in before we go to Groundzero will be posted tomorrow morning automatically by our Content Management System. FYI.