Will a Rustoleum spray paint work on a paintball gun?

I have an old MR1 that I rarely get out and play woodsball with, and I have an urge to paint it an olive drab, or a color similar. It has a matte anodized finish on top of its aluminum body. There is a can of some 'RustOleum Specialty Camouflage' sitting in my cabinet. It's an Army Green color and has an ultra-flat finish. How effectively would this apply&wear on the gun? Thanks!