Scribd has a set of blueprints that are available for download that feature the .30 caliber Gatling Gun. Not being a machinist, it is unknown to me if they could be used to build a gatling gun or not, however they are fascinating. One thing you find out early in a gun project is how much work it is, and building a Gatling gun is serious work. It would also help if you own a foundry. Not a project to be taken lightly. These plans seem to come from Antique Ordnance Publishers and it is unclear where they got them, so if you feel you should pay for them, send them some money. They have lots of blueprints for sale of your favorite big Civil War gun. There goes the rent money...
