Jesse George Hill was sentenced to eight years in prison Monday for manslaughter in the death of 27-year-old Amy Sands in Calgary in August 2012.
With credit for time already served, Hill will only spend another four years and nine months behind bars.
Debbie and Ed Sands say the sentence is not enough for their daughter's life.
Hill has maintained he didn't do it; he left the party after getting into an argument, and when he returned with a friend, that's when the shots were fired.
Crown prosecutor Devin Singhal Singhal said it would have been difficult to convict Hill on a charge of murder.
“The person who was shooting at no point really had sight of the person he was shooting at,” he said, adding there were no witnesses, so intent or identity of the shooter would be difficult to prove.
Hill’s lawyer Adriano Iovinelli maintained his client did not pull that trigger.
“He has a responsibility for what occurred as well, but at the end of the day, he was not the shooter and it took two years and two months for that conclusion to come about,” he said.