What kind of holster are you using?swilcox said:(SNIP), holsters of any type seem to add too much thickness and create a bulge.
If you use a OWB holster, I suggest an IWB. My favorites are COM series made by Eric Larsen at HBE Specialty Leatherworks. I own two; one for a CZ 40B and another for a Kahr P/M. Great stuff! Here's a photo of my Kahr P9 Covert in an HBE prototype COM 3 holster called the COM "2 1/2". Here's a photo of my Kahr P9 Covert, on the left, in the COM 2 1/2. On the left is my PM9 in a kydex Pocket Companion XL pocket holster by David Stillwell at Grandfather Oak.
If an IWB holster is your preferred holster type but it's still not concealing your S&W, then may I suggest a Smart Carry holster. I'm able to conceal my duty Sig P229, Steyr M9 and various Beretta 92 Compacts/Centurions in one with no problem and little bulge.