With the PolarStar Fusion Engine still available for airsoft guns with version 2 gearbox receivers, some are doing their own custom work to fit the engine into other airsoft guns. Bingo Airsoftworks just did a conversion on a P90. So this will be interesting reading as the P90 gearbox is another animal to tame with such a new technology.

"The P90 gun is very compact bull-pup design that has a very futuristic look. Since the gun is so compact, it is popular on CQB fields, but can also be used effectively on outdoor fields as well. To take the gun to the next level of performance, it would seem that adding it to the PolarStar Fusion Engine family is the next step. Todd Malan wanted to be the owner the highest performing, fully loaded P90 airsoft gun available, so he sent it out to have a Fusion Engine installed. After a couple fits and starts, I was able to make the Fusion Engine work in the P90 without the complication of a 'Z' nozzle and still maintain the ability to port the Fusion Engine to other V2 gearbox guns in the future if desired."

Read the full story here.