New to modelling !

[{KK}Waleed]

Hi guys. It's been a while but I once again return to ACR.

Recently I found nice low poly weapons models. which I think would look really nice in game but I don't know how to get the model from blender to ACR. I am currently learning blender and I want to export blender model to .md3 and then replace it with previous model (i think). I don't if thats the correct/best way to do it but can someone help me out please.
Also are there any requirememnts/thing I should know of before making models in Blender for ACR.

Thank you.
Waleed