BB gun will $!^& but not fire,doesn't seem to compress spring

bpjefferson365 and @mayer, my thought is more related to the plunger and the lever not connecting. If the lever does not connect with the plunger then there will be no resistance. Even if the spring would be broken, it would still have some resistance since it can not move anywhere. See if this diagram will help a bit. Here is a really good tutorial, even so the model is different. It should still apply to your Daisy as well.

Try checking out the firing mechanism : Daisy Model 10 Carbine Firing Mechanism Replacement