Model of the Kamov Ka-50 "Black Shark" helicopter.
It features coaxial rotor, retractable landing gear, cockpit, cannon and opening panels.
It's a little too big for minifig scale, but it's the cost of "playable" details.
The colors are pretending about-a-desert camouflage. My black bricks are in use so I made him in yellow and grey. I think that it doesn't look so bad ;o) It could look better in tan, but I don't know if there are such bricks in that color - I don't have many tan bricks ;o)
Welcome to MOCpages. You have some very nice aircraft design skill. I looked up a picture of the real deal and yours looks very accurate. The color scheme could use a little work (the grey and yellow look a little splotchy in the tail), but I like all the little details like the exhaust, the opening engine compartment, and the panels.