Polarstar Fusion Engine MP7 This is an original Tokyo Marui MP7 originally customized by Rudy from Bingo airsoft with a Polarstar Fusion Engine. Parts and customizations: - I designed and 3D printed an custom hop up arm. - Custom hop up nub - 9ball bucking - 9ball stainless tight bore barrel - custom designed and 3d printed suppressor - original flash hider - perfectly cleaned and operating fusion engine - 3d printed rail system - accessible foregrip where lipo batter is stored ( so you do not have to remove front of gun to smash battery inside) - CUSTOM engineered TOP DOWN HOP UP MOD. I spent hours getting the alignment perfect for this. Unlike the common p*jack system with the original hop up, there is NO and I mean NO hooking right. I designed this TOP DOWN mod so that you can adjust your hop up with a simple Philips Head screw driver. You can adjust it to hop anything from a .20g to a .48g BB. The hop up is currently set for .40g BBs at around 75-80 psi. - modified stock for numerous extension positions. - 3d printed magpul's on the magazines. - 10 midcap magazines Information: - The MP7 has original gen1 solenoids. The system needs to run at 80 psi or higher. This is not an issue due to the barrel length being so short and achieving low joule limits for cqb not an issue. - This build is on point consistent, I am talking BB on top of BB on top of BB. With .48g BBs you can reach out past 250ft consistently, and that is not an exaggeration. - All 10 magazines included perfectly feed up to .48 BBs. The price is firm. This is one of those builds that if you know you know. I can easily provide more pictures or shooting videos. I respond very quickly to eBay notifications so do not hesitate to message me. You must be 18 or older to purchase this. It will be shipped with an orange tip as well.