This article is part of Reason's special Burn After Reading issue, where we offer how-tos, personal stories, and guides for all kinds of activities that can and do happen at the borders of legally permissible behavior. Subscribe Now to get future issues of Reason magazine delivered to your mailbox! Let's start with a disclaimer: If you have little to no experience with guns, it's probably not wise to try assembling your own. It can be dangerous to make a mistake—even deadly.
