My first firearm over 20 years ago was a Beretta 92f, then glocks and have always stayed with high capacity 9mms with a few .40 thrown in here and there. I am looking for a full size 45acp. Besides just having fun shooting at the range, it could be possible I would use it for HD. I doubt I would CCW with it. At first I was pretty set on a 1911 since a 1911 is THE .45 etc...., but the capacity of the glock 21 gen4 sure looks good. Maybe a M&P or something with a threaded barrel......... I don't know.