Did you consider using a nbb co2 system too?

Could be interesting to compare the weight of both possibilities.

I'd suggest something along the lines of a crappy walmart clearsoft gun. I know it's blasphemy to even buy one of those but their gear boxes are usually clear plastic with plastic gears which cuts the weight by alot and some models even use low end RC motors for toy RC cars. Which also drastically reduces the weight of the gearbox.

Walmart mini aeg those tinny aug guns 30$ full auto.

Yah, I suppose I'll try clearsoft if I can find one that feeds via magazine. It'd be inexpensive, I just hoped for something if higher quality.

This is an extremely bad idea. You wont be able to do anything with a coaxial heli. At a minimum you will be looking at a 450 class heli to lift any weight. These aren't toys and are far more dangerous than airsoft will ever be. It's hard enough to concentrate on keeping them flying but trying to mow someone down with bb's is ludicrous. The spinning blades on these things will cut through you like butter, break bones and possibly kill.

If you must mount an aeg on something flying than do it on a multirotor. It will be more stable and easier to fly and you can mount an fpv cam.

http://youtu.be/9bkKsjfOoto

Oh and there is nothing regulating the number of rotors on RC aircraft. 3, 4, 6 or 8 rotors... Knock yourself out.

r/c heli gun
 

sweet mod up..:) how about an electric pistol internal? would that be small/light enough?

if you build it to game, expect it to be shot at. ;)

I was thinking that the entire time. I don't care about airsoft versions of surveillance UAVs, they're just cool and I like the idea of having to stealth away from eyes in the sky. Mount a gun on one and it becomes a target.. that can't feel it and call itself out when it gets hit.

Yeah I hope this isn't an idea for a game-able UAV. I wouldn't attend a game with some kind of armed UAV was at that I couldn't fire back at.

If you're a multi-rotor enthusiast and you have the weight capacity, then you could design a type of shield with impact sensors on it. That way you could detect hits and allow people to shoot back at it.

I've also seen protective "cages" that surround the rotors on multi-rotor RC's to protect the blades. These would also protect players from getting cut.

No, no gaming for this lil blender. Just a creativity exercise and to fart around with in the back yard.
Once I select an action to mod and mount, I'll post screenies or maybe link you o my RC Groups forum topic.
A friend in Wisconsin mounted a Ruger 10/22 action with 2" barrel and 10rnd magazine to his .60 size nitro chopper. The thing handled like a whale and liked to go backwards when fired, despite the attitude hold gyro. He flew it around in his barn in the middle of nowhere.
Once again, just a fun exercise.
We're I I do one for game, I'd be sure to make it known that return fire is welcome and expected.
That won't be the case unless I get this fun one built and tweaked.