
This unique (and currently unnamed) prototype airsoft gun has been in development for the last 18 months was conceived from the ground up as the ultimate airsoft gun. It’s may also work with an AK nozzle, which might be a tiny bit too long, so it may need to be cut down a little.īingo Airsoftworks is very excited to present the first look at the Bingo Airsoft Designs LLC Prototype/Concept Airsoft gun. The Fusion Engine nozzle length (measured at 42.25mm) is basically the same as the M249 nozzle, but the M249 nozzle doesn’t have a chamfered nose, so a custom nozzle is needed, or the M249 nozzle can be modified to work. There is very little room in the gun for the wiring, so the hopup block needs to be removed and milled/dremeled out to make clearance for the wire harness connector to pass through. The last issue is running the wire harness to the fore grip area (if you choose to put the FCU and battery in the front).

It is important that the trigger have a hard stop to prevent over travel from the trigger lever which can damage the Fusion Engine trigger microswitch.

Unfortunately the tail on the trigger doesn’t reach the hard stop in the FE lower assembly, so a screw was added to fill the gap. The trigger needs to be moved from the stock gearbox to the Fusion Engine. There are two screws added to the body which prevent the fire select switch from over rotating in either direction. The fire select cog is rotated 180 degrees so it is now at the top to reach the plate. The selector plate is slotted so the cog on the fire select switch can move the plate back and forth. The main issues that have to be addressed are the selector plate, the trigger and the routing of the wire harness to the front.

This version of the MP5 has the extra 3 round burst mode, but since the FE doesn’t currently support the extra fire mode, the conversion locks out the extra fire select position. Here are some pictures of a Polarstar Fusion Engine installed into a VFC MP5.
