Actually Alan Gura filed the petition; the SAF and Ill State Rifle Assocaition supported the suit. The NRA had a suit in the mix as well, NRA v Chicago. The McDonald v Chicago and NRA v Chicago were combined by the courts. Many conversations have suggested these two should have never been combined, they were appealed seperately but remained combined. The debate going is the NRA v Chicago should have been the one to go to the SCOTUS. It had a narrow approach that would have had the greatest impact.
I guess the only claim SAF has is to have helped finance McD v Chicago. I applaud any organization that supports the 2A. SAF has done this. However, the appearance is they just do press releases and tag along on other suits. Their political clout seems to be non-existant. They may file after the horrible legislation is signed, I support any organization that is proactive in protecting the 2A, not reactive, waiting to file a lawsuit. I know this happens, but if they can prevent encroachment at the beginning on the 2A, that is better.
Also, please make the connection with Alan Gura and SAF/CCRKBA.