Originally Posted by
Forwad Controls Design
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. The latest Mega lowers (with the old Mega atomic whirl) has been reported to have longer ears that do cover the TGF.
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