I bought one of these last year, and since then have put:
- metal bushings / reshimmed.
- guarder 110 spring.
- Modify tappet plate.
- Modify Air nozzle.
- Guarder hopup / bucking.
- Sysema Silent Piston(w/bearings)/cylinder head.
- Full metal ball bearing spring guide.
- Large intellect 8.4v 3800mAh battery with insulated spade connections.
- Madbull version 2 6.03 455mm barrel.
I can't remember if i did anything else to it but meh. Wanted to make a good solid little performer, been playing with it every week to every other week for a year. Shoots 360 fps right now with 0.25g, at 14 bps. OVERALL the accuracy on this gun is crazy. Need a metal body and some more solid body pieces, the screw holding the pistol grip on is currently stripped
but the mechbox is a rock.