This SOCOM Gear nicety has a VFC gearbox inside and for a reasonable price of US$350, you can get it from RedWolf Airsoft. You may need to get some high cap magazines as it comes with only a mid-cap... "Solidly licensed NOVESKE tactical rifle with RAS rail up front, this NRH M4 has a high end VFC gearbox to keep things running smoothly. Features bolt cover lock-back feature that can be sent flying forward with a press of the bolt release button. Features a CRANE stock to hold a CRANE battery. Super loud shooting sound gives a rat-tat-tat as you pull the trigger, delivering 400fps on 0.2g BBs. Features a standard 70 round magazine.

Comes installed with a red plastic flash hider but also comes with a black metal one in the box (look hard!)"