My dad gave me a .38 special 5" barrel, Serial #218571. A good friend of his was a Flying Tiger of the USAAF, not original Flying Tigers AVG (American Volunteer Group), but 14th Air Force activated after March 1943. I've seen M&P models on line but not sure if this is considered one. Thanks

Welcome! With the caliber, barrel length and SN it is likely an M & P. Please post photos or provide more details as listed here and we can give you more information:

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Alan
SWCA LM 2023, SWHF 220

On the yoke, is the number 377.