AR-15 Twist Rates Explained: The History, Science, and Barrel Charts You Need to Know
If you’ve ever wondered how a rifled barrel went from a frontier experiment to a defining feature of the AR-15, you’re in the right place. AR-15 twist rates aren’t just a number stamped on your barrel—it’s a cornerstone of ballistic performance that’s shaped firearm design for over 400 years. From the hand-etched grooves of 16th-century…