I found the gun debate presented here close to fair. I wish they would have done some fact checking on the claims of the people/organizations they quote. But overall it is pretty good. It has a collection of facts that could be useful. For example:
The most-recently available total annual spending budgets for gun control groups were $13.7 million collectively (4.7% of the NRA’s 2013 budget): including Everytown for Gun Safety ($4.7 million in 2012); the Brady Campaign ($2.7 million in 2012); the Brady Center ($3.1 million in 2010); Coalition to Stop Gun Violence ($308,761 in 2011); Sandy Hook Promise ($2.2 million in 2013); and the Violence Policy Center ($750,311 in 2012).
It includes a decent history of gun laws and gun organizations.
It’s worth a read.