Question: How old you have to be to buy a gun in texas?

Disambiguated questions and answers:
context: Texas has no laws regarding possession of any firearm regardless of age; all existing restrictions in State law mirror Federal law except for the prohibition of zip guns. A person of any age may possess a firearm such as at a firing range. Texas and Federal law only regulate the ownership of all firearms to 18 years of age or older, and regulate the transfer of handguns to 21 years or older by FFL dealers. However, a private citizen may sell, gift, lease etc. a handgun to anyone over 18 who is not Felon or is a Felon that is 5 years removed from Felony infraction of probation or parole end date and is now a law abiding citizen. NFA weapons other than clubs are also only subject to Federal restrictions; no State regulations exist for NFA weapons other than clubs. Municipal and county ordinances on possession and carry are generally overridden (preempted) due to the wording of the Texas Constitution, which gives the Texas Legislature (and it alone) the power to "regulate the wearing of arms, with a view to prevent crime". Penal Code Section 1.08 also prohibits local jurisdictions from enacting or enforcing any law that conflicts with State statute. Local ordinances restricting discharge of a firearm are generally allowed as State law has little or no specification thereof, but such restrictions do not preempt State law concerning justification of use of force and deadly force.
question: How old do you have to be to buy a gun in texas from a private citizen?
short_answers: 18 years of age or older
18
wikipage: Gun laws in Texas
context: Texas has no laws regarding possession of any firearm regardless of age; all existing restrictions in State law mirror Federal law except for the prohibition of zip guns. A person of any age may possess a firearm such as at a firing range. Texas and Federal law only regulate the ownership of all firearms to 18 years of age or older, and regulate the transfer of handguns to 21 years or older by FFL dealers. However, a private citizen may sell, gift, lease etc. a handgun to anyone over 18 who is not Felon or is a Felon that is 5 years removed from Felony infraction of probation or parole end date and is now a law abiding citizen. NFA weapons other than clubs are also only subject to Federal restrictions; no State regulations exist for NFA weapons other than clubs. Municipal and county ordinances on possession and carry are generally overridden (preempted) due to the wording of the Texas Constitution, which gives the Texas Legislature (and it alone) the power to "regulate the wearing of arms, with a view to prevent crime". Penal Code Section 1.08 also prohibits local jurisdictions from enacting or enforcing any law that conflicts with State statute. Local ordinances restricting discharge of a firearm are generally allowed as State law has little or no specification thereof, but such restrictions do not preempt State law concerning justification of use of force and deadly force.
question: How old do you have to be to buy a gun in texas from an FFL dealer?
short_answers: 21
21 years or older
wikipage: Gun laws in Texas

Long-form answers:
long_answer: Texas has no laws regarding possession of any firearm regardless of age; all existing restrictions in State law mirror Federal law except for the prohibition of zip guns. A person of any age may possess a firearm such as at a firing range. Texas and Federal law only regulate the ownership of all firearms to 18 years of age or older, and regulate the transfer of handguns to 21 years or older by FFL dealers. However, a private citizen may sell, gift, lease etc. a handgun to anyone over 18 who is not Felon or is a Felon that is 5 years removed from Felony infraction of probation or parole end date and is now a law abiding citizen.