LEGACY VIET NAM Mini-gun� Barrels
Four 7.62×51 Mini-gun barrels from 1967, in the middle of the Viet Nam war.� These barrels are used but very serviceable.� Carbon buildup on muzzles visible in one photo.� Using an M-8 Barrel Erosion Gage, (see instruction photo), the bores gauged from 75% to 90% serviceable.� Two barrels have slightly detectable bulges about 6 inches from the beginning of the bore.� The condition of each barrel, using its identification information visible in one of the photos, is as follows.� These are �best estimates� of the condition of the barrel rifling in each barrel:
H-R 11701204 4-67 L�� -�� 1/8� Stellite erosion in bore grooves and �� erosion in lands.� Bulge bore diameter measures at 70% serviceable range.
H-R 11701204 4-67 L�� -�� �� Stellite erosion in bore grooves and �� erosion in lands.� Bulge bore diameter measures at 60% serviceable range.
H-R 11701204 4-67 M�� -�� �� of Stellite erosion in bore lands and 1/8� in grooves.
H-R 11701204 1-67 J�� -�� Perfect Stellite bore.
The Stellite bore throughout the rest of the barrel lengths, to the muzzles of all four barrels, is excellent, to and including the muzzles.