147XXX Inland Barrel with no markings

[gmbellew]

It appears to be either an Erma Werke manufactured barrel or a commercially rebuilt barrel. In the gas cylinder area it appears identical to an Erma Werke manufactured barrel as seen at M1 Carbines in Austria: Oddities. But from looking at some photos of the chamber area, it looks like it could be a sleeved barrel, but I can't be sure one way or the other. Could it somehow be both?

[rpw7351]

Just read Club newsletter. Looks like an '03 barrel sleeved into a de-milled
carbine barrel. See the pin thru the lower part of gas piston sleve. They work, but aren't kosher.