As Brandon points the gun [small black pistol] toward the KKK member, the hammer is both cocked and un-cocked between edits.
After Gator is axed in the spine, he says he cannot feel his legs. If a nerve was severed, he would lose all sensation below that point. When Angie hits him in the groin, however, he clearly feels that. Later, tied to a chair, he seems to have full use of his legs.
Brandon impales a Klansman with a crowbar, conspicuously leaving the tool in the man's head. Later he uses the same crowbar to skewer another Klansman in a different location.