FCD TGF (Trigger Guard, Forward Controls) is available in standard (straight) and winter versions. Both are machined from 7075 aluminum. They do not have a spring loaded detent for the front, but use a set screw, like the Magpul Enhanced Trigger Guard, and a standard trigger guard roll pin in the rear.
A roll pin is used for TGF’s rear, as it’s reliable and robust. This will also prohibit loosening. The front set screw is flush with the receiver and doesn’t protrude. A 1/16 Allen wrench is required for install.
Both the standard and winter versions feature a canted front edge to make rocking the magazine into the mag well easier. The winter version has as much constant/unchanged space from the trigger bow forward as possible instead of the space inside tapering and decreasing as the trigger guard nears the receiver’s front trigger guard holes. The space to the rear of the trigger bow is inaccessible for the user’s finger, so it’s kept small and low intentionally.