I recently bought a 1911 Kimber CDP II. Of course never being happy with stock I added a few things. One of which was a mainspring housing with beveled magwell. When I took off the mainspring housing I noticed it was Polymer .....not aluminum or steel . I enjoy shooting this handgun, it shoots great. But, you would figure being a pistol built in their custom shop, it would have better quality parts. I also inspected my buddies Raptor and it to had a polymer mainspring housing. Am I going to run into anymore surprises with this handgun?????