After sending my Sigma back for repairs three times in four months, I requested a new pistol. S&W replaced the gun but I had lost faith in Sigmas. I didn't even open the box. I traded it and five extra hi-cap mags for a Ruger P-345. I have three other Smiths and am well satisfied with them. I just felt I couldn't rely on the Sigma. S&W repair will work with you if you have the patience....I didn't!