Christopher Lee Burch plead not guilty to both charges in court related to the shooting of a clerk at an East Missoula convenience store and gas station.
A trial date has been set for October 31 and bail is set at $500,000.
23-year-old Burch and 24-year-old Preston James Hanna were arrested on September 7 for attempted deliberate homicide and robbery charges.
Hanna, the alleged driver of the get-away car, was charged with suspicion of accountability to both charges. He plead not guilty to all charges in court on September 26, he is also scheduled to be in court at the end of October.
The 21-year-old night clerk has undergone multiple surgeries at a Missoula hospital after being shot in the back.
Investigators said the shooter entered Ole's Country Store about 3 a.m. Friday, and said "Gimme all the money,."
The clerk was cleaning up the beverage bar about 20 feet away.
He didn't give the man the money.
Video surveillance shows the man entering the store, leveling a rifle, and shooting.
The bullet hit the young clerk as he was bending down.
"It appears he was shot in the upper shoulder," said Missoula Sheriff's Department public information officer Jason Johnson, " in the back."
Investigators said the shooter ran out of the store without taking anything.