TGF (Trigger Guard, Forward Controls) is available in the winter version. It is machined from 7075 aluminum, they do not have spring loaded detent for the front, but use a set screw like Magpul's, and a standard trigger guard roll pin in the rear.
We retained the use of roll pin for TGF's rear, as it's reliable and robust, it also will not loosen. The front set screw is flush with the receiver and doesn't protrude.
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.
TGF is designed for use with TDP spec forged lower receivers, and fills the gap forward of the pistol grip, between the trigger guard "ears" (note that TGF will not swing down like TDP spec trigger guards). All the sharp edges and corners have been removed.
Lower receivers made from Cerro Forge "keyhole" forgings generally have taller trigger guard ears, as do Colt, LMT, and BCM lower receivers.
Please note ZEV produced lower receivers appear to have shorter trigger guard ears, and these shortened ears expose a bit of the bottom of the TGF, as shown below. This has no bearing on functionality.