I have not seen the NRA take a stance that I thought was "supporting the 2nd" in my lifetime.
From Business Insider The NRA Has Been Outstandingly Successful Where It Really Counts
"A review of the NRA legislation news page has shown that the organization has had at least 230 full legislative victories on the state level in the past ten years alone."
From Wikipedia National Rifle Association - Wikipedia
"In November 2005, the NRA and other gun advocates filed a lawsuit challenging San Francisco Proposition H, which banned the ownership and sales of firearms. The NRA argued that the proposition overstepped local government authority and intruded into an area regulated by the state. The San Francisco County Superior Court agreed with the NRA position.[114] The city appealed the court's ruling, but lost a 2008 appeal.[115] In October 2008, San Francisco was forced to pay a $380,000 settlement to the National Rifle Association and other plaintiffs to cover the costs of litigating Proposition H.[116]
In April 2006, New Orleans, Louisiana, police began returning to citizens guns that had been confiscated after Hurricane Katrina. The NRA, Second Amendment Foundation(SAF), and other groups agreed to drop a lawsuit against the city in exchange for the return.[117]
While the NRA filed an amicus brief with the Supreme Court in the 2008 landmark gun rights case of District of Columbia v Heller.[118] In a 5 to 4 vote, the Supreme Court ruled that the District of Columbia's gun laws were unconstitutional, and for the first time held that an individual's right to a gun was unconnected to service in a militia.[72][119] Some legal scholars believe that the NRA was influential in altering the public's interpretation of the Second Amendment, providing the foundation for the majority's opinion in Heller.[119][120]
In 2009 the NRA again filed suit (Guy Montag Doe v. San Francisco Housing Authority) in the city of San Francisco challenging the city's ban of guns in public housing. On January 14, 2009, the San Francisco Housing Authority reached a settlement with the NRA, which allows residents to possess legal firearms within a SFHA apartment building.[121]
In 2010, the NRA sued the city of Chicago, Illinois (McDonald v. Chicago) and the Supreme Court ruled that like other substantive rights, the right to bear arms is incorporated via the Fourteenth Amendment to the Bill of Rights, and therefore applies to the states.[122][123]
In March 2013, the NRA joined a federal lawsuit with other gun rights groups challenging New York's gun control law (the NY SAFE Act), arguing that Governor Andrew Cuomo"usurped the legislative and democratic process" in passing the law, which included restrictions on magazine capacity and expanding the state's assault weapons ban.[124]
In November 2013, voters in Sunnyvale, California, passed an ordinance banning certain ammunition magazines along with three other firearm-related restrictions. The ordinance was passed by 66 percent in favor.[125] The ordinance requires city residents to "dispose, donate, or sell" any magazine capable of holding more than ten rounds within a proscribed period of time once the measure takes effect.[126] The following month, the NRA joined local residents in suing the city on second amendment grounds.[125] A federal judge dismissed the suit three months later, upholding the Sunnyvale's ordinance.[127][128]
The city of San Francisco then passed similar ordinances a short time later. The San Francisco Veteran Police Officers Association (SFVPOA), represented by NRA attorneys, filed a lawsuit challenging San Francisco's ban on the possession of high-capacity magazines, seeking an injunction.[129] A federal judge denied the injunction in February 2014.[127][130]
In 2014 the NRA lobbied for a bill in Pennsylvania which grants it and other advocacy groups legal standing to sue municipalities to overturn local firearm regulations passed in violation of a state law preempting such regulations, and which also allows the court to force cities to pay their legal fees. As soon as it became law, the NRA sued three cities: Philadelphia, Pittsburgh, and Lancaster. In Philadelphia, seven regulations the NRA sued to overturn included a ban on gun possession by those found to be a risk for harming themselves or others, and a requirement to report stolen guns to the police within twenty-four hours after discovery of the loss or theft.[131] In Lancaster, a city of fewer than 60,000, mayor Rick Gray, who has chaired the pro-gun control group Mayors Against Illegal Guns, was also named in the suit. In that city, the NRA challenged an ordinance requiring gun owners to tell police when a firearm is lost or stolen within 72 hours or face jail time.[132] The basis for the lawsuits is "a 1974 state law that bars municipalities against passing restrictions that are pre-empted by state gun laws". At least 20 Pennsylvania municipalities have rescinded regulations in response to threatened litigation.[133][134]"