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XBox - Gun cheats

Unlock extra items:
Finish story mode to unlock Reed's horse, Magruder's Nock gun, 
and the Cannon Nock gun.

Unlock 69 Ferguson Rifle - Beat Hollister.
Unlock Apache Shirt - Complete the Hunting Missions.
Unlock Cavalry Sword - Beat Reed.
Unlock Dual Peacemakers - Beat Hoodoo Brown.
Unlock Silver Spurs - Complete all Pony Express Missions.

Reed's horse and Macgruder's shotgun:
Complete 100% the story mode and every side missions, after 
visit to Macgruder mine.