Fatigue can cause someone who doesn't normaly limpwrist to do so. Others just do it because their new, or at least new to the ligthweight polymer pistols.
No it has more to do w/ their not being enough weight in the FRONT end of the pistol. Polymer pistols are when this became a big issue.
Also if the ratio of spring weight (force needed to compress the spring, and conversly the force it comes back w/) to enegry produced by a given round is to low (such as the "tuned" "raceguns" that can only fire a specific type of ammo) it will not cycle all the way. By allowing it to flip up too much you are robbing it of the energy it needs to return all the way to battery.
On metal guns the front end weight helps keep them down, the lighter polymers, especially the steyrs (being esentially all compact models) require the shooter to keep them down by locking the wrist.
If anything the sharp grip angle and low bore axis are the features that reduce muzzle flip so much compared to say a Glock, USP, or XD. But those are generally bigger guns (in their fullsize incarnations as compared to M series anyway). and so have more weight out front.
At least this is what i gather form reading so much gun stuff lately. Someone plz correct if I'm wrong.
