M1 Garand blank adapters

[CCyooper]

I was reading somewhere (maybe Pyle) that blank adapters were not standardized for the M1 so I thought I would post a few variations that I have. The top one I assume is an earlier version, the middle is the standard that you see routinely, and the bottom one is a little different but note that it is marked USMC 8 & I which is the Marine Barracks in DC.

[RCS]

Here is another variation for the gas port barrel, first blank adapter was made for the gas trap rifle. This had to have been developed at SA