Ed Brown makes some that do not have that lock.
I suggest you keep the locking one (don't throw it away) should you have to return the firearm to the manufacturer.
"A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
Life Member NRA
Life Member NAHC
Former President of the ECPT (Eifel Combat Pistol Team)