Would it be possible to make a shield to lay over a docking bay entrance that would reflect bullets yet you could pass through it in a vehicle or just as a player? Or has this already been done and i haven't found it?

Yes, this is possible. What you need to do is create a model and collision for it, and compile an equipment tag using the model and collision. Then place the equipment in the scenario. The reason it is an equipment is because equipment tags deflect bullets, but players and vehicles can still pass through them. Also, the equipment will not move around from explosions or anything else.

alright so basically make it a tag and work it in like an over shield but have no effects?

Bubble Shield