Oscar Pistorius arrives to North Gauteng High Court on September 12, 2014 in Pretoria, South Africa. Photo / Getty Images
Judge Masipa began proceedings by addressing three separate, gun-related charges against the Olympian, acquitting him of one charge of unlawfully firing a gun in public because of what she was said was contradictory testimony by witnesses.
She then began commenting on the other charges.
On Thursday, Masipa said there was not enough evidence to support a murder conviction for Pistorius' killing of girlfriend Reeva Steenkamp.
Pistorius fatally shot Steenkamp in his home on Feb. 14, 2013. He said he mistook her for an intruder, while the prosecution said he killed her intentionally after an argument.
LIVE STREAM: Pistorius verdict Day 2
On Friday, armed security officers stood at each of the three entrances to the courtroom, while others stood near the red-robed judge as she explained her verdicts from her dais overlooking the court. There were also paramedics in the courtroom.
The court in South Africa heard the firearms incident happened at lunchtime, when more than 200 people were present.
Oscar Pistorius, left, passes family members of the late Reeva Steenkamp on his arrival in court. Photo / AP
"The accused asked for a firearm while in a restaurant full of patrons," Judge Thokozile Masipa said.
"He may not have intentionally pulled the trigger but that does not absolve him."
She added: "I view the state has proved beyond all reasonable doubt" that Pistorius contravened gun laws.
Pistorius was earlier cleared of another gun charge. The incident related to an allegation that he fired his weapon through a car sunroof in November 2012. But the judge said prosecution witness Darren Fresco was "poor", and cleared Pistorius of the charge.
Pistorius faces up to 15 years in prison, the maximum prison sentence for culpable homicide although there is no minimum term in South Africa.
The second count on which he has been found guilty - discharging a firearm in a public place - carries a maximum jail term of five years.
The sentencing will not be today.
On the charge of murder, Masipa said, "the accused is found not guilty and is discharged, instead he is found guilty of culpable homicide."
Steenkamp's father Barry leaned forward in his seat when the culpable homicide verdict was read. Her mother, June, showed no reaction.
Members of Pistorius' family embraced the shamed athlete as the judge called for a short adjournment.
On Thursday, on the first day of delivering her verdict, Masipa had criticised Pistorius for acting hastily when he shot Steenkamp.
"If the accused, for example, had awoken in the middle of the night and in darkness seen a silhouette by his bed and in a panic shot at that figure, only to find it was the deceased, his conduct would have been understandable and perhaps excusable," she said.
"The accused had reasonable time to think, reflect and conduct himself.
"I'm not persuaded that a reasonable person with the same disability would have fired the four shots.
"The accused knew there was a person behind the toilet door, he chose to use a firearm.
"I am of the view the accused acted too hastily and used too much force. It is clear his conduct is negligent."
The trial, which has gripped South Africans and much of the world for half a year, has cast a harsh spotlight on the fallen hero's private life.
Full of high drama, the trial has fed intense media interest worldwide, with live broadcasts veering into the realm of TV reality.
During proceedings Pistorius has broken down, weeping and at times vomiting as he heard how his law graduate and model girlfriend's head "exploded" like a watermelon under the impact of his hollow-point bullets.
