No such weapon ever made by S&W
You can get or request a manual for free at S&W's website
You will need to call S&W to find out.
Varies from 200-500 USD
Yes. 9mm Luger is the 9x19 cartridge, also known as the 9mm Parabellum, and that's what the 9mm Sigma is chambered for.
S&W will send you a manual for free if you go to their website and request one.
9mm Luger. Ball or hollow point.
A well-used Walther P99 AS (Anti Stress) handgun in 9mm/.40 S&W tends to fetch a price of $500 to $600 in today's market.
Either the SIG or S&W
Go to S&W's web site and request a owner's manual. They will send it to you for free.
You can download or request a manual via mail from the S&W web site
Recommend you find a good gunsmith or contact S&W and ask for an owner's manual.