This has been asked before, and it all came down to the Battery. The E-Mag battery pack is very heavy duty, because the solenoid can draw up to 8 or so amps peak, this is also the reason for the Plastic on/off pin, instead of a switch, it would need a massive switch to handle the peak current. Switch mods do work, but may burn out, and Tom tends to over-engineer things (Which is a good-thing). The Hyperframe and Mako frames are pretty good, but they don't have the heavy-duty solenoid that the E-Mag does, nor the Sear designed for Electro/Retro usage. Simply put, they work just fine in 90% off application, but the E-Mag is going to be able to handle marginal situations (Like a stuck sear)far better and still work. It might be over-engineered, but it's not going to see the problems that have been seen with some guns and the Hyperframe and Boo-Yah/Mako frames.
2k2 VF Cocker, STO/Eclipse Blade, Old-Style 14" Boomstick,
68AutoMag Classic Feed CF11023, Ring trigger.