You mean mounted on top of it? Don't know if BRDMs could have that kind of load, but if not, it shurely could be inside of it. I recently dowloaded the Hummers made by Operation Gulf War Crisis Team, and they have 3 diferent kinds of mounted guns - M60, 50.cal and Tow, (one for each model), so it shouldn't be very dificult to implement (having the skill to do it). And it would be nice to keep it realistic.