He wanted Mohammed's death to be a lesson to other parents.
"If you are going to train your kids around guns and educate your kids to be about guns ... the first thing they will want to do is use it."
"We bawl our eyes out every night that we think about him. I thank God at that time I was there we were there, both parents were there. I don't wish this on anyone."
Mr Khan said he didn't blame the gun's licensed owner, another uncle Mohammad Rizwan Khan, for what went wrong.
"He wasn't supposed to bring the gun over but I asked him to because we've had some wild pigs over there."
A 14-year-old cousin, Mohammed Nabil Khan, was also shot in the incident but survived.
Fiji police have charged Khubeb's 10-year-old uncle with manslaughter.
Mohammad Rizwan Khan has also been charged with manslaughter due to negligence.