The bolt cannot be moved with the safety on. Our trigger has a firing pin block like the regular TRG/T3 triggers and the bolt won't move with that block in place.
We will indeed be selling the new style trigger guards separately, it will be a bit though. We have a new polymer T3 guard and we might be offering the aluminum ones too.
Blindspotter I'm not sure which angle you mean but on our trigger the shoe only moves fore and aft. I's pretty comfortable though, you might find you like it.
Thank you,
Justin