I have one. Also with the unfluted cylinder and wood 3-5-7 grips. Of course it has the lock. But answer me one question. If you shoot a perp with it will he know if it has a lock or not. Case closed.
So what's with unfluted cylinders? Makes a heavy gun heavier and adds rotational inertia to the cylinder that requires more effort to overcome in cocking or double action.
Plus it looks weird.
I bit the bullet and bought all 3. I had trigger jobs on the 3 and the 5. Will have the 7 done in 2021. I love these pistols.