The controversy over flat vs curved triggers has gone on for years and will continue to go on. It depends so much on the type of firearm, but mostly it's a matter of preference of the shooter.
On the 2011 platform one manufacturer that I know of has come out with a novel solution, a modular trigger shoe. Bul Armory has a modular trigger shoe on some of their products that allow you to simply switch out the shoe of the trigger to either a flat or a curved face. With this system the trigger has a removable shoe held in place by a simple hex screw. The face of the trigger can be changed out to whichever choice is best for you.
You can also opt for a thicker shoe that adjusts the trigger's position so that you can effectively adjust the placement of the trigger to make it fit where you like to place your trigger finger. By adjusting the trigger placement, you can adjust the length of pull to better obtain a position where you can place your finger exactly where you need to in order to allow for the length of your finger so that you can obtain a straight back pull of the trigger and reduce or eliminate pulling back at an angle and pulling the gun off target.
It's available in short, medium, and long, as well as several colors. It would be nice if other manufacturers would adopt this system.
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