My 5.56 Bolt

[Brian Dick]

It should be tight and will loosen up with use. We had a test where you stand the complete bolt on it's face and if the carrier falls downwards, the gas rings should be replaced. Make yourself a sharpened brass scraper for the carbon build up. Don't take off the Parkerizing. It'll wear off on it's own with time anyhow. It's all normal.