A nice little 3 with a full 30.5mm x 30.5mm stack.

Photos

Part List

Frame	SCX-140 V1.1 3IN RACER KIT (4 builds) Armattanproductions.com	$35.00
Flight Controller	LUX 32-bit Processor Flight Controller Support PPM or Serial RX For Multirotor Racing (14 builds) Banggood.com	$14.99
ESCs	4 x DYS XSD 12A 2-3S ESC BLHeli_S (5 builds) Getfpv.com	$31.96
Motors	4PCS Emax RS1306 4000KV RaceSpec Motor 2CW/2CCW For FPV Racing (7 builds) Banggood.com	$54.76
Propellers	RaceKraft 3030 Quad-Blade Propellers (2 builds) Progressiverc.com	$3.99
FPV Camera	RunCam Swift 2 (412 builds) Shop.runcam.com	$44.99
FPV Transmitter	Eachine TX526 5.8G 40CH 25MW/200MW/600MW Switchable AV Wireless FPV Transmitter RP-SMA Female (120 builds) Banggood.com	$12.92
Antenna	Spare Whip Antenna for Eachine TX03 or AirBlade TQ169 (8 builds) Airbladeuav.com	$1.50
Receiver	Flysky X6B 2.4G 6CH i-BUS PPM PWM Receiver for AFHDS i10 i6s i6 i6x i4x Transmitter (188 builds) Banggood.com	$12.99
HD Camera	Foxeer Legend 3 4K UHD Camera Hobbyrc.co.uk	$126.95