A pop culture fan and costume enthusiast from Sydney is facing a possible jail sentence for producing 3D printed replica guns. Back in 2017, a 28-year-old hobbyist named Sicen Sun was arrested for advertising an imitation weapon for $1 million on a Facebook buy, swap and sell group.

Following his arrest, the Australian man pleaded guilty to a handful of charges, including possession of 3D printable gun blueprints, manufacturing a pistol without a proper permit and also possession of an unauthorized pistol. However, Sun claims that he only produced the replica firearms to use them as cosplay props.

“With 20/20 hindsight I just realise how silly, idiotic, stupid and naive my actions were,” Sun explained during his recent NSW District Court sentence hearing. “I could not even begin to contemplate that a hobby would land me in such strife.”

The replica weapons created by Sun include a P90 sub-machine gun seen in Stargate and MA5C rifle from the famous video game series Halo. Although he admits to being aware that his cosplay weapons were possibly illegal to produce, he rationalized his actions by the fact that the weapons were incapable of firing a projectile.

As for the $1 million asking price on Facebook, the defendant states that he never expected to sell his props for such a high cost, but wanted to obtain acknowledgment for his work. Instead, he’s now gained recognition for being the first person in New South Wales to be charged with possessing blueprints to manufacture firearms.

Crown prosecutor Stephen Makin said that Sun’s crimes are serious because the guns could still be used in a serious crime even though they were fake. Sun also states that he has created a pamphlet and to educate others of the legalities of 3D printing prop, trying to prevent others from falling into the same legal trouble.