I’ve been carrying the Smith & Wesson M&P shield now for about three months and I am very satisfied with its performance. It’s comfortable to carry and the slim profile makes it easy to conceal. Mine is chambered in 9 mm, but it is also available in .40 cal – they also just introduced their newest version which is chambered in .45 cal. I’ve probably put about 300 rounds through this gun without any problems whatsoever.