Aluminum lowers are a great way to save money on your next AR-15 build. They're also easy to make, but there are a few things you'll want to keep in mind when designing and making them
Here are five steps for designing an aluminum lower with a 3 axis CNC. This will get you started and make joining the parts of the lower together much easier than waiting for your parts to arrive in the mail. You can save money by making your own aluminum lowers (something many shooters do on their own).
5 axis cnc machine for aluminum lowers