+3 for the Gear ideas.
The Magnesling Beam is kind of similar to a weapon idea I'd been thinking about. Infact my idea is probably not even a weapon, more of a device.
Air BazookaAppearance : Very large caliber but short length shoulder mounted bazooka
Sound : Like a huge champagne cork being popped
Damage : None
Armors : Undecided
Rate of Fire : Undecided, probably a long reload measured in seconds
Accuracy : Broad cone with maximum effect at the centre scaling off to the edges
Speed : Same speed as the power of the weapon (read below)
Overheat : No, it's air cooled!

Ammo : Energy-based, more energy the greater the effect (read below)
On Hit : Applies a physical force
On Impact : Bounces of the surface lessening the effect by 50%
Effective Range : Short-Range Scaling off only slighty before ceasing entirely as the effect disapates
The device fires an Air distortion which pushes against a target with great force. It can be used to push another player (or indeed the user if bounced off a perpendicular surface) using very basic physics*. The primary use of this weapon is to knock cappers from their intended course. Other secondary uses include propelling a team mate at high speed.
The power and speed of each shot it dictated by the user. The device charges directly from the user's own energy. The mouse button is held until a desired energy charge is reached and then released, a full charge can be held until the user releases the mouse button. The power and speed of each shot scales with the percentage of the charge (eg. 70% charge = 70mph). A quick/instant press release of the mouse produces a 30% charge.
*Very basic physicsThe user in these examples is always firing a 100% charge, a 100mph effect, and is always stationary.Example 1. The target travels directly towards the user at 50mph, the user fires the weapon and the target is sent in the opposite direction 50mph. 50mph - 100mph = -50mph (i.e. 50mph backwards)
Example 2. A teammate travels away from the user at 40mph, the user fires the weapon and the teammate gains speed to travel at 140mph. 40mph + 100mph = 140mph
Example 3. A teammate travels away from the user at 110mph, the user fires the weapon, there is no effect as the distortion cannot catch the teammate.
Given the potential power of the weapon, I would suggest that the actual power would need tweaking in play testing. 100mph would possibly be too powerful.