Strange tap inside Garand receiver - help

[kruffe]

Hi

I need a little help regarding my newly purchased Garand.

When I disassembled the Garand, I found a strange tab inside the receiver. I seems like a hole has been drilled through the receiver and a split was inserted and afterwards welded in place. Also the bolt has been cut, so it can pass the small tab during reloading.

My Garand is a Springfield Armory, serial range 1154xxx. It seems to be an Arsenal rebuild, since it has electro penciled "RRAD 9/66" on one of the receiver legs. (RRAD = Red River Army Depot, Texas)

I do not know if this change (tab in receiver and cut in bolt) has been made during rebuild or after?

Or the most important question: Why has this change been done? Does it serve any purpose?

I am considering having the tab ground down, so it becomes flush with the receiver (back to "original").

I appreciate any input - thanks!

Here are som pictures of the tab inside the receiver and of the cut in the bolt...

Attachment 48883Attachment 48884Attachment 48885Attachment 48886Attachment 48887Attachment 48888

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