Don't throw it out because it's dirty. Talk about wasteful.
I'd just buy a 20-pack of those cheap red shop cloths (if you don't have some old T-shirts or socks or underwear you were going to throw out later), a little bowel of warm water, and start rubbing. Go easy on the water until you've gotten off all the junk you can with a dry rag.
Run the barrels under the sink with hot water, or soak in a bucket if necessisary. Ditto with the hoppers.
Do you know how to re-build a Spyder? All the Stryker guns are Spyder-based, more or less, so it's fairly easy to pull out the internals, check the hammer O-ring, re-oil and re-install.
Also, got any pics of these filthy things?