The following are known Action Replay Codes for Buck Bumble on Nintendo 64 (N64).

Device Compatibility: Action Replay & GameShark

Have All Keys
810e92e00101
800e92e20001

Infinite Ammo
810e92e603e8
810e92ea03e8
810e92ee03e8
810e92f203e8
810e92f603e8
810e92fa03e8
810e92fe03e8
810e930203e8
810e930603e8
810e930a03e8
810e930e03e8

Infinite Health
810e92d842b0

Infinite Lives
810e96520005