The SR1 Stand anim is already a leftover in SR2 (found it recently while working on my
FPA+ follow-up). It's called "gml1_pa_open_sd". It's part of a series of animations for vehicle
passengers (I'm not sure if the rest are leftovers too). My guess is while these animations were being built, a stand animation was needed for the test model, and this was it.
View attachment 50401
The SR1 Pistol animations are leftover too. They're prefixed with "gml1_driver_". The fire animation wasn't leftover, but the pml1 fire animation looks fine with them.