I saw a Glock subcompact 33 @ a local shop that had Internal Lock in the base of the grip that when turned prevented the gun from being fired. See here....GLOCK Few Questions 1) I would not purchase the gun specifically for this device, nor do I feel that it offers any advantage whatsoever but given that I am looking for a G33, is there any reason not to purchase it?? 2) Does it add any additional weight as compared to the non-locking models? It is a metail lock in the base, it has to add some weight, right? 3) Does the lock take away anything form the gun, do you think the lock could be a disadvantage somehow? I thought about it failing and locking on someone but I just dont see how that's possible? 4) Do you think the lock provides any advantage??? One possible advanatage I thought of was say someone has to go into a building where CCW is prohibited and would be forced to leave it in the car, i can see where this would be an extra measure of security to have the gun locked. Like I said, I would'nt look for one with a lock, but being that it has it - any reason not to get it specifically becuase it does have it???