Please look not for IDLE animations, its expensive to create animations, but pistols in BB is unaccuracy spawn potato-guns.
New aiming animations (with actual distance from body and weapon width + tritium marks for all pistols) is needed.
Also take attention that the sound/fire_delay_between_shoots_when_fast_clicking is fully syncronized with animation. Its mandatory for pistols (actually for any semi-automatic gun like rifles too)