HOUSTON – The man known for making the blueprints to a fully 3D-printed gun and posting them online posted bond after he was walked into a Harris County courtroom Saturday.

Cody Wilson, from Austin, was turned over to U.S. marshals at George Bush Intercontinental Airport after he was arrested in Taipei, Taiwan. He was then taken to probable cause court in downtown Houston.

VIDEO: Cody Wilson is walked into a Houston courtroom

It was there he learned he would be charged with sexual assault relating to a warrant Travis County authorities put out for his arrest. Wilson is accused of sexually assaulting a 16-year-old girl in Austin.

Austin police Cmdr. Troy Officer said Wilson met the girl at a coffee shop on Aug. 15 and later brought her to a hotel and paid her $500 for sex, according to court documents.

The age of consent in Texas is 17.

His bond was set at $150,000. After Wilson bonded out, he was seen leaving the Harris County inmate processing center Sunday afternoon.

WATCH: Cody Wilson released from Harris County Jail

Wilson's attorneys released the following statement:

“We are glad that Cody is back in Texas again where we can work with him on his case. That’s our focus right now, representing our client and preparing his defense.”