A big red hand? Magnus maybe?
Bottom left is Magnus, correct! One picture down - let us see if any others are figured out.Great job!
1 looks a lot like a Wraithknight's cannon, but not exactly. 2 would be a Thousand Son's arm. 4 could be some Space Wolf characters' fur coat.
1. Correct race - wrong faction. =) good guess. Hint: Harlequins2. Correct - thousand sons - 30k character recently released again in 40k.4. Wrong faction - but he was once loyalist. Now he is a demon I believe.Keep the guesses coming!