That was the gun they got sued over for copying Glock.
Despite of all the hoopla, S&W removed a shelf under the Sigma's sear that Glock had patented as part of its drop safety and that was it. Glock copied all of its major design elements from someone else there wasn't much to sue over.
I agree the original Sigma is a POS. I'm not a fan of the new ones either, but not due to reliability issues.
Cash price for truck: $1,000
Price with Sigma thrown in: $1,200