Hold left-mouse button to do a "wind-up" shot, mostly 100% accuracy, even when moving.
Holding left-mouse button after a shot will automatically wind-up the next one, and so on.
Right click performs an instant shot, but is VERY inaccurate
If you wind-up and then hold right-mouse button while letting go of left-mouse button, the gun animation will hold a LITTLE bit longer
If you perform a wind-up to right-mouse button hold, you can let go of the right-mouse button to cancel the shot, or press left mouse button to instant shot from the delayed wind-up but WITH good accuracy. (Note: This might actually be a bug.
Like the Deagle, your accuracy takes longer to recover after jumping.
Kills count towards Deagle kills/achievements currently