Wow! You are doing amazing stuff!

In case that you use it for first person too. You shouldn't reduce it, simply add LODs.

You could sell this gun seperately! Start a gun shop in Second Life to earn some extra money!

http://www.puppenheim.org/
http://www.wuerfels-welt.de
Old Game Tutorial: http://www.puppenheim.org/MITutorial.zip
Free Game Editor: http://puppenheim.org/AlienalsWeihnachtsmann.zip
http://www.puppenheim.org/blender_starting_main_settings.txt