GUN PC Cheats

       Completion bonuses
Seven barrel Nock gun - Successfully complete story mode.
Armored horse and Cannon Nock gun - Successfully complete story mode and all side missions (100% completion).
Apache Shirt - Successfully complete the Hunting missions.
Silver Spurs - Successfully complete the Pony Express missions.
.69 Ferguson Rifle - Defeat Hollister.
Dual Peacemakers - Defeat Reed.