I got to tour the Precision Weapons section of MCB Quantico's armory. Apparently they pull unit armorers from around the Corps for a 3 year tour there. Full on machine shop, best facility I've ever seen, they build all the USMC sniper weapons and match guns. The trick is getting there. No guaranteed MOS=no sign contract.
Option #2 kid goes military for 4 years, does whatever floats his boat, takes GI bill and skips on down to Colorado School of Trades.