An update on the MP7 PolarStar conversion made by Bingo Airsoftworks. The interesting bit here is the use of 3D printed parts to create some parts for easier conversion... "I’ve made some updates to the original TM MP7 Fusion Engine conversion. Making use of more 3D printed parts allowed the conversion to be simplified and it helps keep all the solenoids in place, so they do not interfere with the sliding stock."

Read the full story at Bingo Airsoftworks.