I have Lego Digital Designer and I went to factory.Lego.com and I went to gallery. I typed the word "weapon" and I found this p90 made by Abeboys. A 7 YR OLD DESIGNED THIS, or well so it says on the description. Here's the link: http://factory.lego.com/gallery/?parameters=1||weapon
Go to the 2nd page and you'll find it. It's so awesome! I built and and I have pictures. Take a look! If you have LDD then download the p90 model. View it on LDD and it so awesome! There is a building guide (thank god =D) so u can build this model too! Enjoy!