GearOut, a Web retailer of hunting and fishing supplies, is seeking to expand amid a difficult political climate and competition from giants such as Wal-Mart. The firm changed its name from GunSource to reflect its expansion into fishing gear and does not sell guns directly, but offers classified advertising to those who do. It reviews all ads and rejects those that are clearly illegal, 'distasteful' or 'objectionable.' The national mood has turned against guns in the wake of the Littleton, CO school shooting. but GearOut head Chip Perryman says ammunition is not a major part of the site's