If you are looking for something in the .40 or .45 range, then you can't go wrong with a HK USP .40 or .45 in either Full Size or Compact. Eats all kind of dirt without any sort of problem - Tim Lau says he's fired 5000 rounds through his without cleaning it at all. Plus it can be lefty, righty, or both, in your choice of trigger versions, with or without safety / decocker.
My question is - if you are backpacking, why are you going to carry IWB? Most IWB holsters put the firearm behind the kidney or right next to the hip - which is directly under most backpacks, especially those with kidney pads.
You would probably be much better off with a standard belt holster, especially something that has a flap or level II security so that the pistol won't fall out while running about.
Just my 2 cents...
Spark
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Kevin Jon Schlossberg
SysOp and Administrator for BladeForums.com
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