What's the old saying......two is one and one is none. Carry a back up.

Clean, well maintained, properly lubricated pistols are very reliable. Thousands of LEO's and literally millions of service/military personell carry and use them every day with very few documented mechanical failures. Most failures are caused by the human behind the gun, not the gun itself.

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Ret. LE, FA Instr, S&W Armorer