Possibly.
LAPD changes the gun they issue recruits in the Academy a periodically but they don’t re-issue / change over the whole department. Previously issued / approved duty guns are grandfathered. If officers want to to switch to a newer gun they have to buy the gun and support gear.
There are a couple factors that work here one is that the only thing cheaper than a cop is two cops. Another is that Rookie cops always wanna appear to be salty so after the switch to striker fired guns many newer Officers trained on striker guns wanted to switch to “old school” DA/SA guns.