The Magpul PTS PDR-C AEG just arrived at airsoft retailers in the US, and Bingo Airsoftworks didn't waste time getting their hands on one and converting it to use the PolarStar Airsoft Fusion Engine... "The gun is designed to hold the battery in the pistol grip and the gearbox uses a quick change mechanism for the piston spring to adjust the FPS. The gun’s gearbox is very proprietary. Due to the compact shape of the gun, the gearbox has the BB feed tube integrated into the gearbox shell, and it uses an downward offset nozzle. The challenge, of course, is to put the PolarStar Fusion Engine into this small CQB bull-pup design, and also improve on a couple of small idiosyncrasies of the design."

Read the full conversion story at Bingo AirsoftWorks.