The Smith and Wesson 12415 does not have a thumb safety. The model with the thumb safety is the 12414. I own the S&W 12414 and it definitely comes with the thumb safety.

I have a S&W MP -2 compact with laser sight built in. I prefer one with a thumb safety. It is 9mm and works well as a CCW
carry pistol

no it does not have a thumb safety Caliber: 40 S&W
Capacity: 13+1
Barrel Length: 4" / 10.2 cm
Overall Length: 7.3"
Front Sight: Steel - White Dot
Rear Sight: Steel - White Two-Dot
Action: Striker Fire
Grip: Polymer
Weight: 28.8 oz / 816.5g
Barrel Material: Stainless Steel - Armornite® Finish
Slide Material: Stainless Steel - Armornite® Finish
Frame Material: Polymer
This one has the thumb safety budsgunshop.com/product_info.php/products_id/104245/smith+%26+wesson+m%26p40+m20+compact+4+thumb+safety+green+laserguard

Steve, no Sir. This UPC code does not have a Manual Safety. Safeties are Passive Trigger, Striker Block Safety only.