3 inch Apex clone. Reactive and powerfull for small park freestyle.
Based on Mamba system mini mk2, mamba ultry tiny vtx and crossfire nano rx.
I use it with 3s 850mah Batterys, but it can be used with 4s batterys too.

If you want to build it just search for the equivalent up to date components!
Frame -> ImpulseRC Apex 3" clone.
FC and ESC -> Diatone Mamba Mini Mk... with 30A Esc. (Last model is Mk4 that suports Dji O3)
Motors -> rcINpower GTSv2 1506, 4300kv. (Rated for 4S, but works very well in 3S).
FPV Camera -> Caddx Ratel 2
VTX -> Diatone Mamba Ultra Tiny (Sold Out everywhere, just go with the RUSH Tiny Tank nano or similar)
RX -> TBS Crossfire Nano rx with mini inmortal-t
Antena -> Foxeer Lollipop 3. Short.
Batterys -> Lipo 3S 850mah, XT30 Conector.

I have designed some custom 3D Printed parts, for the vtx and the mini inmortal t antenas.