Walt, no problem fitting any semi-auto I have in the 560. But the holster I was talking about above is a used Safariland 295 designed specifically for the Beretta 92 that I couldn't pass up even though I don't have a 92 because it was only $10. It's molded Kydex sandwiched in leather with a belt loop, thumbreak, and trigger guard retention system.
Also, My Jericho .45 is the same width as my 97B (the slides even fit the other's frame) but shorter, being considered a semi-compact. The 40B's dust cover is actually about 1/8" wider than the 97B's but the slide is narrower and about a half inch shorter, and the dust cover is 3/4" shorter than that. They both fit the holster reasonably well which is why I guessed that a leather holster could be adapted.
Sorry Lizardbone, I've never tried a holster for an HK.
Jeff