lehn20
08-21-2008, 08:19 PM
http://www.atf.gov/firearms/firearmstech/081508manufacturing-of-firearms.pdf
http://www.atf.gov/firearms/firearmstech/081508guide-for-marking-variances.pdf
http://www.atf.gov/firearms/firearmstech/081508guide-for-marking-variances.pdf