Just a quick reply about magazines (often refered to as "clips" by the unknowing) for the Sig Ultra. I did some research and learned that the mags provided by Sig were made by Checkmate. I researched the patent number on the follower and verified they were made by CM. I purchased a spare mag from KIMBER, and subsequently learned it to was made by CM. I ordered more mags directly from CM. They all work flawlessly. The only difference is is the markings on the base plates (bare=SIG, Kimber and Checkmate). Oh, the new CMs have a black follower.
The SIG ULTRA uses the Wadcutter style mags (parallel feed lips).
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I may be crazy, but it keeps me from going insane
John  CBOB0692
US Army (Retired) Jul 64-Feb 85
LIFE MEMBER, National Rifle Association
LIFE MEMBER, Disabled American Veterans
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