The abbreviation "nm" has several uses :
Metric Measurement
The nm is a nanometer, one-billionth of a meter (1 x 10-9 m).
English Measurement
The usually-capitalized NM means "nautical mile" equal to a minute of latitude or longitude (1/60 of a degree). By definition, it is now 1852 meters or about 6076 feet.
Internet Chat
By context, nm can mean "nothing much" or "never mind".
Newton metres
Not Mind Safe
NMS Elisabeta ended in 1915.
NMS Elisabeta was created in 1888-10.
NMS Smeul was created on 1915-07-21.
Volkswagen Passat NMS was created in 2011.
NMS means neuromuscular stimulation in some contexts.
NMS is observed as a dangerous side effect associated with certain neuroleptic (antipsychotic) drugs such as haloperidol (Haldol).
NMS is considered a medical emergency since 25% of untreated cases result in death.
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Are you sure that it is "NMS" and not actually "MNS". All of the Model 54 barrels I have seen were marked "MNS" which is short for Midvale Nickel Steel
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