What does "MB" stamp mean?

**SFC Higgins** · 11-30-2023 07:37 AM

I cannot find what this stamp means on a US&S 1911A1 represents. It is a "MB" on a Marine Corps Barstow rebuild. Anyone know?

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**Highly Recommended** · 11-30-2023 07:37 AM

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**martin08** · 12-02-2023 08:25 AM

You may find the information in the following recent link interesting.

https://www.1911forum.com/threads/5t...#post-13845559

Not saying the long held mystery is solved. But Magnaflux testing and subsequent inspection stamp does sound feasible.

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