Authorities have a separate case pending in federal court in Tucson against five men charged with murder in Terry's death.
Prosecutor Shane Harrigan had asked for a stiff penalty, saying Avila's involvement in the illegal weapons buys went beyond the 52 guns he bought for the ring and extended to the recruitment of two others who purchased dozens of weapons. "He was more than just a mere straw purchaser," Harrigan said, adding that Avila didn't care about the violence associated with illegal gun buys.
Avila's attorney, Candice Shoemaker, sought leniency, saying her client wasn't a leader in the ring and had an expensive drug problem. "His involvement in this case was because of that substance abuse," Shoemaker said.
Federal authorities conducting the Fast and Furious investigation have faced tough criticism for allowing suspected straw gun buyers for the ring to walk away from gun shops in Arizona with weapons, rather than arrest the suspects and seize the guns there.
The investigation was launched in 2009 to catch trafficking kingpins, but agents lost track of about 1,400 of the more than 2,000 weapons, some of which were later found at crime scenes in Mexico and the U.S.
Mexico's drug cartels often seek out guns in the U.S. because gun laws in Mexico are more restrictive than in the U.S.
So far, 15 of the 20 people charged in the gun case pleaded guilty to charges.
Records show a Jan. 3 trial has been set for five other alleged ring members.