Echo1 AR-57 PolarStar Fusion Engine Conversion

IMG_1827The Echo1 AR-57 is a unique gun that uses P90 magazines on a AR platform. To accomplish this, a proprietary hopup is used with the gun that requires an extremely long nozzle. The nozzle is one of the longest I’ve seen on a gun, beat only by the nozzle on the Sig556. To have the Fusion Engine work within this gun a custom hybrid nozzle had to be made extending a SCAR H nozzle with an AEG nozzle.

The mag well on the Echo1 AR-57 is not used, but it works well as a location for the FCU and the battery when stored in a dummy magazine.

IMG_1825The basic install is the same as any standard AR gun, except for the nozzle and changing the wiring to go forward so it can go into the mag well.

IMG_1826Look for this unique Fusion Engine gun at an airsoft field near you! (Ok, maybe if you know Brian in Vermont) 🙂

Happy Airsofting!

– Rudy

Keyword: ar57

Maintaining the MP7 Fusion Engine Conversion

Additional updates have been made to the MP7 Fusion Engine conversion. The enhanced design allows the Fusion Engine to be extracted from the MP7 without requiring the gun to be taken apart.

The upper solenoid cradle has been redesigned to allow the fire select switch to be mounted on the cradle, and the trigger switch implementation has been changed so it now uses the standard trigger/battery contacts on the top of the switch assembly. Additionally the solenoid air supply fittings have been changed so the stock Fusion Engine fittings can be used, which allows more air to flow to the solenoids, especially the poppet solenoid, so the poppet triggering can be more reliable.

My friends at Amped Airsoft were nice enough to make a video showing how to extract the Fusion Engine from the MP7. Check it out below.

Happy Airsofting!

– Rudy

Updated video on maintaining the Fusion Engine MP7