I like the idea of having a list of gun/gun accessory websites, although I would seriously rather see them listed in a ranking order more based on something like availability, low prices, shipping, and customer service. Of course, it wouldn't be fair to take into account any kind of support/donations to calguns. Then businesses could just buy their rank.
Just a list based on the calgunners experience, there are tons of businesses out there and I'm sure some of you have found some that google doesn't throw on the 1st search results page.
Remington Model 870 Express Tactical, Marlin Model 795, Smith And Wesson M&P 9, 1943 Mosin Nagant M91/30, Ruger 3" GP100
Remington M700, M1 Garand, AK-47, Build an AR