Great trigger guard - Strike Industries Billet Trigger Guard w/ Finger Rest

Installed this trigger guard on AP lower and it fit perfectly fine, no issues whatsoever. Put a little bit of blue thread locker just to be certain the screws don't back out.

A minor issue I had was that this trigger guard does not work well with the Magpul 60 round drum mag. There's a part on the trigger guard that will interfere with the drum mag and cause difficulty when putting the drum mag into the mag we'll or releasing it. This issue will make it difficult for the drum mag to engage the mag catch and will require a bit of force. Releasing the drum mag is just as difficult.

Solution: file down the part of the drum mag that hits the trigger guard. I filed my drum mag and it engages and disengages with not issues at all.