I have had a more positive experience with Fusion than the previous posters.
I purchased an alloy framed Fusion 9mm CCO from the guy that ordered it. He placed his order in Oct of '09, rec'd the gun this April, I bought it in September. Things started poorly and I really questioned buying it over an LSI or Colt New Agent. I put a few hundred rounds of FMJ and JHP through it and had all kinds of extraction and feeding issues, the gun just wouldn't run. This happened over Labor Day weekend and I tried the 1911 forum's Fusion section for help and ended up communicating with Bob Serva, the owner, even though it was a holiday weekend and he treated me like it was a typical work day. He talked me through a number of possible solutions and when they didn't do the job he sent me a return ticket for my gun so they could ix it under their lifetime warranty. Remember, I'm the second owner and they owe me nothing.
Anyway, I sent the gun in, along with a box of my duty ammo for testing. The gun was ordered with an unramped barrel, which was a big part of the problem (they no longer offer that option for this reason). They stripped my gun, milled the frame for a ramped barrel and fitted a new match barrel and bushing and adjusted the extractor. In addition, since the frame would have to be refinished after being milled, Bob offered me my choice of finishes (I went with Yukon T-11 in tungsten grey) at no charge. I asked him to replace the trigger with a carbon fiber unit they offer while the gun was apart, which he did, and because it shot a bit low for me I asked him to check the sights. Lastly, I asked them to go through every part of the gun and check and double check it to assure I wouldn't have any more issues since I bought it for off duty carry (my duty gun is a S&W 1911 9mm Pro Series).
Bob took care of everything - the gun was repaired and refitted, refinished in my choice of colors, new trigger installed, shorter front sight installed, and every part of it inspected for fit, finish, and function. The charge for all of this was $68.00 for the trigger and front sight. Fusion covered everything else under warranty - even though I bought it second hand. Now the gun runs perfectly, it is incredibly accurate and has the best trigger of any of my 1911's. So, in my experience, Fusion is a stand up company that backs their products with a true lifetime warranty and incredible customer service.
My CCO is now my favorite carry gun and I won't hesitate to order a Fusion in the future or to recommend the company to others. And if you've got problems with your's call Bob, he'll get it fixed.
This is my gun when I bought it -
And this is it when I got it back from Fusion -