I have 3 S&Ws M10s that I got at a auction of my late LEO friend that passed away of lung cancer due to heavy smoking. 2 are 4 inchers and both parkerized and beadblasted 10-6 and 10-8 and I also have his 10-9 done the same way. I also carry the 10-9 2 inch in a iwb that Ihave had for 20 years. I also have a 640 in .357 mag and I have been using the Hornady Critical ammo 125 grainers in it and a pachmeyer grip. Shoots and groups pretty well since I am medically disabled and sit in a power chair sometimes. rz625-8