One man's obnoxious is another man's obvious.

The engineers took the Sigma and ultimately produced the M&P and then the SD9. Does that mean that the engineers have rendered the Sigma obsolete? Nope. My house used to only have 3 bedrooms, now it has 5. I improved on the design and now my house is much more functional. That's what the OP wants for his Sigma. The lack of aftermarket for the Sigma only strengthens the argument for modification. Regardless of what the gun was designed to do you can create a balance between skill and mechanical performance. My M&P had a good trigger from the factory, now it has an awesome trigger thanks to Apex.

SW9VE: 2,000+ rounds post trigger job (polished internals and spring removal). 0 malfunctions. Smooth 5lb trigger pull.

SW9E: 3,000+ rounds post trigger job (polished internals and spring removal). 0 malfunctions. Smooth 5lb trigger pull.