Can I own a handgun and get my rights back if I have a felony for tracking cocaine?

Not in Missouri.

California Penal Code 12021(a) defines who may not own a firearm in California. It states: Any person who (a) has been convicted of a felony under the laws of the United States, the State of California, or any other state, government, or country, or (b) is addicted to any narcotic drug may not own or have in his or her possession, custody, or control any firearm. After conviction of a drug felony, you can never get your gun rights back in California.

You need to petition for your civil rights back. You can see if you are eligible, requirements, and forms online.

No. State and federal law both prohibit convicted felons from possessing firearms. It is a lifetime ban.