How many gunsmiths do you know that are certified machinists? I'm talking about someone who has all the training to be a machinist with the certification to back it up. Sadly any guy with some knowledge of firearms and a lathe capable of cutting a chamber or threading a barrel and a few go, no-go gauges is not a gunsmith. Maybe a military trained armorer is one with a start toward being a gunsmith. However military firearms are limited in variety and unless they with an elite unit like the Army Marksmanship Training Unit they won't be ready to enter civilian gunsmithing. Did they attend a brick-and-mortar gunsmithing school? Better, but still not a machinist. Eric B.