Most barrel manufacturers will actually stamp the twist rate directly onto the barrel (usually closer to the front of the barrel, but can also be on the bottom of the barrel).
If, for some reason, your barrel isn’t marked, you still have options!
- Contact the manufacturer. The more information you can provide them, the better they will be able to help you!
- You can always bring the barrel to us (or any competent gunsmith). We’ll be able to help you out.
Wanna submit a question for our AR FAQ? Use the Contact Us page and submit your question. You may see your question in an upcoming newsletter!