Updated the AMP suits' GAU-90 Autocannon page. Written in the style of the 'Janes' military magazines.
The GAU-90 has great visual impact in the film, even though its a simple slug-thrower. I was moderately surprised that no lasers/plasma/rail etc weaponry were used, but this can be explained by the necessity for simple, easy to manufacture weapons and ammo on pandora. Complex weapons would need to be shipped from Earth = $$$.
Thanks also to Calles for giving the page an info box under the image.