A lot of them don’t seem to have it for some reason. Don’t know if it’s made like that or if they just break and end up getting removed or what but I’ve seen a few cases where police have confiscated guns off people and a lot of the time they never seem to have the covers on.
I did wonder if perhaps it’s a different version of the gun. I know there’s like 9,000 different variants made across different decades so possibly they decided it isn’t worth the extra weight or manufacturing cost.