myhatinthering 462 Posted November 13, 2016 what is the preferred one people are using as I need to buy a new one thanks Quote Share this post Link to post Share on other sites
T Bill 649 Posted November 13, 2016 If your talking about AR chambers, I use a NO GO gauge as a confirmation. If you mill a groove into the side gauge you do not have to take the extractor out. Quote Share this post Link to post Share on other sites
mintbore 15 Posted November 29, 2016 If only one....No Go to avoid excessive headspace. But both are a safer bet. Always remove the ejector...extractor can stay in on any style bolt Quote Share this post Link to post Share on other sites