Most of your stereotyped gun owners do not have a categorical opposition to gun control laws. For example, most are not particularly upset with the ban on new machine guns that has been in place for many years. Rather most of the opposition that you see is against pointless laws that target particular cosmetic features of some guns ("assault weapon" laws) or actually overreaching gun laws that pop up in particular cities in particular states.

There is little focus on the national laws that are already in place, laws that particular states have or are trying to have are what get the attention of the gun lobbyists.