Thank you all for your valuable comments/suggestions.
I was held up in another project and just finished it.
@MagnetJuice : About linear motor, I'm dreaming about the drone launcher platform based on linear motor track... Linear motors can achieve very high speed, so launching a drone using it as Gun is the concept. I'm still in design phase of it. Not sure I'd be able to get the speed, required for the launch.
@CraigM : Thank you for this suggestion, I'll try to find, if anything is available nearby DC area. It it's available somewhere far, I think, if they ship, I can order it.