In this episode of Minute Monday, Amped Airsoft shows the Amped Edition PolarStar Fusion Engine.  This has has upgrades for better performance and comes with an M4/M16 series trigger and steel selector plate so that it can be installed into any M4/M16 series AEG which is Tokyo Marui compatible... "This Minute Monday, Matt Goes over the Amped Edition of the PolarStar Fusion Engine.