S&w M&p 40 Help ??? So I think I've narrowed it down to the S&W M&P 40 for my first handgun. I have some experience shooting several different makes and caliber guns but this is my first purchase. I want something that I can have fun shooting and also keep in the house for protection. I was thinking the 40 is good compromise between the 9mm and 45. What are the pros and cons of this gun? What is Striker Fire Action? Any insight would be appreciated. Unfortunatly as you guys know the first one only starts the addiction and I already know the second piece may be the Kimber SS Pro Carry II 45ACP.