Nema 14 extruder Prusa I3

Hye Guys i designed my own extruder because I couldn't find the perfect one.
So, the perfect one for me is an extruder for Prusa I3, E3D V6 and the most important thing is that I could set on it, a Nema 14 motor. The advantage of putting a nema 14 whearas a nema 17 is the weight. With the nema 14 you get a better precision for pieces you print.
I designed it with Solidworks.
Hope you're gonna enjoy ;)