"This artifact is more powerful than we realized. We need to get it off this barren moon and bring it back to a crowded space station full of students." Great idea....

You can get a HK trigger pack which is the lower with the pistol grip and trigger group with a selector switch that can do SAFE, SEMI, 2rd burst or a 3rd burst then FULL AUTO. It can have up to four modes. Just like Colts 4-way M4 trigger group that has a SAFE - SEMI - 3rd BURST - FULL AUTO.

This is a fantastic sci-fi story man 🧡👍😃

"Rell me of your homeworld, assol..."

Yeah, 'cause we always send a bunch of untrained college students on an emergency rescue mission.