BudsGunShop.com - Internal lock?

Daniel, no Sir. This model does not have the internal lock : -- smith-wesson.com/firearms/mp-340-no-internal-lock

James incorrect UPC while that UPC103072 does not have the lock upc 163072LE does

yes it has the internal lock system see ******Brand: Smith & Wesson
Model: Model 340 Centennial
Type: Revolver: Double Action Only
Caliber: 357
Finish: Matte Black
Action: Double Action Only
Stock: Synthetic
Barrel Length: 1.87
Overall Length: 6.3125
Weight: 11.4 oz
Capacity: 5
**********Safety: Internal Lock
Features: Round Butt, Internal Hammer, Smooth Target Trigger;
Scandium Alloy Construction