WHAT DOES RARE BREED TRIGGER FRT-15 MEAN?

Undecided what bolt bounce is as I am not professional with full-autos and have not shot a person.  Having said that, other than different buffer it looks like I would need to mess Using the fuel tube for getting it to run proper if going through an issue.  That straightforward to do or does it acquire any Specific tools?SAR clearly show past wee