Check out this website: http://www.hipowersandhandguns.com/
This is probably the ultimate Hi Power site.
It was started by Mr. Stephen A Camp, a world renowned Hi Power expert. Mr. Camp passed on a year or two ago and we lost a fine man.
“If ye love wealth better than liberty, the tranquility of servitude better than the animating contest of freedom, go home from us in peace. We ask not your counsels or arms. Crouch down and lick the hands which feed you. May your chains set lightly upon you, and may posterity forget that ye were our countrymen.” ― Samuel Adams