Question: are cmmg barrels any good?
Answer: CMMG offers very good barrels to say the least. There is some controversy over whether or not CMMG uses the MIL-B CMV spec of steel in their barrel, though; someone who says he used to work from CMMG alleges they don't, but CMMG themselves has said on Arfcom and/or M4C that they do, and still advertises as such.