Lil WayneJust days after news broke that DNA profiling was to be used in Lil Wayne’s New York gun case, the rapper pleaded guilty in court on Thursday (October 22) on the two-year-old charge.

For his guilty plea, the 27-year-old rapper (real name: Dwayne Michael Carter, Jr.) is expected to receive one year in jail during sentencing, sometime in February 2010.

According to the Associated Press, Weezy spoke respectfully, answering the judge’s questions with “yes, sir” and “no, sir” responses, as he pleaded guilty to a felony charge of attempted criminal possession of a weapon.

He admitted guilt for a loaded .40-caliber handgun found on his tour bus after it was stopped following a Manhattan concert on July 22, 2007.

He had previously pleaded not guilty to the charges, and his lawyer disputed that the gun was even Lil Wayne’s.

On Thursday, State Supreme Court Justice Charles Solomon warned Lil Wayne that he wouldn’t be able later to withdraw the plea, as others have tried in the past.

“I’m not one of those people,” said the rapper.

Weezy faced at least 3 1/2 years in prison if convicted of the original weapons-possession charges against him.

He’s due back in court December 15 before his sentencing date, which has yet to be set.