After 2 seconds: 5 Stability, 5 Handling, and 5 Reload at x1 Stack.
After 10 seconds: 15 Stability, 15 Handling and 15 Reload at x2 Stacks.
Being still for 0.5 seconds removes all stacks. Works while stowed.
Enhanced: Stacks remain for up to 1 second after being still.