NEW 3D design for the M41A Pulse Rifle .. accurate and working

Let me start by saying I am Australian and here in Victoria, Australia we have the strictest gun laws in the world.
We can't import airsoft nor real parts of any kind (without a mile of red tape and import permits/collectors licences etc etc) so I'm trying to fill a hole in the market so to speak.

What I Want :
I want an accurate reproduction with a working pump grip and grenade ejection port, removable mag, working loading action, working triggers, adjustable/sliding stock, working ammo counter and muzzle flashes for both barrels as well as sounds for all actions.... so the full box n dice really lol

I searched all over and found some good 3D models and even printed some
I designed my own to fit together over/around Nerf guns but it's not screen accurate enough for my liking hence this new venture.
I have been 3D designing for a while now and I am designing this new one with print quality and ease in mind as well as functionality and the ability to integrate all the little extras I can think of.

I will post some pics shortly and update with progress
Thanks for your interest,
Grant