The following are known Action Replay Codes for Mission: Impossible on Nintendo 64 (N64).

Device Compatibility: Action Replay & GameShark

Infinite Ammo
800a8ea70063
800a8eb70063
800a8ec70063
800a8ed70063
800a8ee70063
800a8ef70063

Uzi With Infinite Ammo
800a8ea70063
800a8ea50002

Big Hands, Head And Feet
800892a10005

Turbo Mode
800899c80001

Infinite Health
810862b2ffff

Big Head Mode
800892a10001

Kid Mode
800892a10007

Big Feet Mode
800892a10004

Big Hands Mode
800892a10003

Huge Head Mode
800892a10002

Tiny Mode
800892a10006