Military triggers are 3 stage.
First stage is ALOT of slack (this is called trigger creep), this is instituted as an "Anti-dumbass device" to give the trooper enough time to think before they shoot (positively ID the target) or to have the firearm ready to shoot by going from first stage to the second stage.
The second stage is the "trigger break" (when the firearm is fired). This is ALWAYS a rough pull before the trigger "breaks" and the firing pin strikes the cartridge.
The third stage is after creep, which is the slack or room to move after the trigger break. It serves no purpose other than to screw up your shot (and indeed it does).
The AR and AK both make great plinkers, but the AR wins the accuracy and distance bid hands down.
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Science is the organized unpredictability that strives not to set limits to mans' capabilities, but is the engine by which the limits of mans' understanding is defined-Yahoshua
  
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