Add One Magazine, Recipe for Disappointment and Failure.

I've been teaching CCW and Firearms safety in some capacity for over 10 years. One issue I often run across is the person that has an absolute great gun, but only one magazine.  That is a recipe for failure.  I have seen a ton of Colt Woodsman Pistols. Beautiful gun, Owner has One magazine.  Old Ruger Standards, One Magazine. Browning Buckmarks, One Magazine.  Browning High Power, One Magazine.... I could go on and on.  News Flash, MAGAZINES CAN FAIL.  Period.  Whether it is dirt, Or rust, or metal fatigue.  Magazines Fail, and when they do, a Semi Auto becomes a crappy single shot, If the firearm has a Magazine disconnect, it becomes a really crappy Single shot.  

Sometimes these owners have an acceptable excuse, "I cannot find any for this gun that I inherited." Ok that is the only acceptable excuse.  

If you have a SEMI AUTO MAGAZINE FED FIREARM, GET more Magazines.  Try Brownells, Try Numrich, But get magazines for that gun.  Most Failures to Feed in my experience as an Instructor can be cured by a different Magazine. If you only have one magazine, that is not an option.

When I carry Concealed, which is ALWAYS, I always have another magazine on me.  FOR ALL OF THE ABOVE REASONS.  I carry it in its own carrier to protect it from losing rounds and pocket crap.