Mark Kelly of Americans for Responsible Solutions tells us via Twitter that he will produce the list of 16 mass shootings since Sandy Hook that his group claimed in a recent gun control letter sent to Congress.

So @GabbyGiffords & @ShuttleCDRKelly, can you provide us an exact list of the "16 mass shootings" since Sandy Hook? http://t.co/qaQ3e88lg7

— Bearing Arms (@BearingArmsCom) October 25, 2013

@BearingArmsCom @GabbyGiffords I'm going to get you that info this week.

— Captain Mark Kelly (@CaptMarkKelly) October 27, 2013

We’ll be very interested in both the list itself, and what they consider a mass shooting.