JJ Moore Airsportz shows a step-by-step assembly of an HPA airsoft build using a G&G base and a collection of Airtac components. The process begins with internal modifications to the Fusion engine, including the installation of a purple poppet, a new nozzle, and a lightning trigger. While the mechanical surgery is delicate, the use of time-lapse helps ensure the viewer doesn't age significantly while watching the pins and springs get into position.

The build continues with a focus on the external and hop-up assembly, featuring lightweight pins, an ambitious mag release, and a tight-bore barrel. A bit of grease is recommended for the hop-up nub to prevent it from embarking on a solo mission across the room during installation. He also swaps out the standard stock for a purple back cap, ensuring the finished product looks as coordinated as a custom sports car, albeit one that shoots plastic pellets.

The finale of the installation highlights the Axis HPA grip, which the JJ Moore claims is a breeze to install compared to older models. The aluminum grip allows for quick attachment without needing to dismantle the entire regulator setup. After some final tuning and a brief moment of realization that the "beans" (BBs) have run out, the build is ready for the field. It turns out that even with the most advanced gear, you still need to remember to bring the ammo.