Did you find a 410 for your project? I have one that I would sell for about $85 but I think the shipping may make the deal more expensive than it is worth. If you are interested let me know where you are and I will look into the cost of shipping for you.
I am at the office right now but when I get home I will get you the information on the gun. I am not sure how to get pictures attached to these messages so an email address or text number would be helpful.