[E-11]

AEP's can easily be upgraded to 250fps with 0.2g. Using mine with 0.25g. 25-30m is no problem. Hicaps are fine, but are protuding in a holster.

 

[E-11]

Not easy at all.
How did you do it? Also, reliably?

Well, it was suprisingly easy: I used the aluminum nozzle from FPS because I killed the plastic one and a j-tac spring. That brought the energy up to 0.58J. I'm using the stock bucking with a custom made aluminum lever. Accuracy is nice: 20cm diameter @25m. Lipo and mosfet is mandatory IMO. Hope that helps.
Has been used for 1.000 rounds up to now without anny issues.