Lucky for you, the protectionists like you got to this issue long before you thought of it:
- Sigarms is an Exeter, New Hampshire-based company. US-distributed
SIG-Sauer firearms are manufactured right here in the good old USA.
- Glock, Inc., located in Smyrna Georgia, manufactures the
US-distributed Glock firearms in use on the NYPD.
- The brand mentioned that you weren't suspicious of was Smith & Wesson,
which has it's manufacturing facilities in Springfield, Massachusetts.
... which is of course owned by Tomkins plc of London, England.
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I forgot about the Glock 18. The select-fire Glock 18 is indeed available to law enforcement personnel, but to my knowledge has only seen service in counter-terror units and was not used by the NYPD Street Crimes Unit.
/jordan