Wayne Paul Eisnor denied killing his wife at his first-degree murder trial in Bridgewater, N.S., Monday. 

Taking to the stand, he said the gun at the murder scene was his. He also recognized his van and his wife's van at the crime scene. 

His lawyer, Roger Burrill, asked him three times if he shot his wife. Each time, Eisnor said he had not killed her. 

Eisnor is accused of shooting and killing his estranged wife, Tina Mae Eisnor, in a grocery store parking lot in New Germany in June 2010. Eisnor was also shot, and claims to have no memory of the incident.

"You have no memory whatsoever of June 30, 2010, the day your wife was shot and died?" the Crown attorney asked. 

"This is true, yes," Eisnor replied. 

12 guns at home

Eisnor said he kept his guns in his bedroom closet. Most were rifles, but Eisnor has a handgun he stored in a can. He told the court he had about 12 guns in his house, most inherited from his father and an uncle. 

"How often do you take that gun and carry it around in your van?" Crown attorney Lloyd Tancock, asked of the handgun. 

"I never do," Eisnor replied.

He could not explain how the firearm came to be at the grocery store parking lot where his estranged wife was found dead. 

The defendant struggled to recount basic details of his life in the court. He looked at his lap and counted on his fingers as he tried to answer questions.

He was asked about his relationships with his family. He said he was getting along "good, as far as I know."

He admitted he had arguments with his estranged wife. "Probably. Everybody has arguments," he said, but could not recall any particular fights. 

Eisnor said the amnesia stretches back from the summer of 2010 to the start of the year. Experts have also said he has amnesia surrounding the day in question.