The five million-member NRA has partnerships with dozens of businesses, ranging from auto rentals to hotels, and even offers a branded credit card.
And TrueCar, a auto buying service, said late Friday that it would end its deal with the NRA as of February 28.
The fallout over this week's shooting rampage at a Florida high school started to take its toll on National Rifle Association's roster of corporate partners on Friday as a half dozen companies severed marketing ties with the gun advocacy organisation.
The family-owned First National Bank of Omaha also said it would not renew NRA-branded credit cards, citing "customer feedback".
There was also a wave of vehicle rental outfits.
Insurance giants Chubb Ltd and MetLife, cybersecurity firm Symantec Corp, and Enterprise Holdings, which operates the Enterprise, Alamo and National rental auto chains, were among those that said they would end partnerships with the powerful NRA.
Canada's Jocelyne Larocque apologises for removing silver medal on podium
Against the Swedes, the USA broke a tie with a massive double-knockout in the eighth end, scoring five points to take a 10-5 lead. The interest and story that followed Team Shuster through this Olympics was a highlight for many following along online.
Enterprise Holdings, one of the world's largest rental-car companies, is ending a key partnership with the National Rifle Association.
The NRA, which claims five million members, did not respond to a request for comment.
And BlackRock, a giant investment firm that holds significant stakes in several major gun companies, said on Thursday that it plans to speak with major players in the gun industry to "understand their response to recent events".
-Avis: Avis provides discounts to NRA members. The group has not commented on companies cutting ties.
Meanwhile, rental auto company Enterprise, which also owns Alamo and National vehicle rentals, said on Twitter it would end its discount program for NRA members as of March 26.
Enterprise followed suit a few hours later. And North American Van Lines said it was scrapping its an affiliate relationship with the NRA.
High school students across the US protest gun violence
The gunman used a semi-automatic AR-15 rifle, police say, and escaped the scene before being seen and arrested later. Calling the school community his family, he said, "Those are kids and teachers and staff I've known for years".
The NRA member benefits site lists a handful of deals that individuals can receive with their memberships.
The NRA offers a code, "NMRN4 in the "Meeting Event Code" field" for travelers to fly Delta to its annual convention in Dallas for a discounted rate.
On Friday, one of the survivors of the shooting, 17-year-old David Hogg, who has become a powerful voice in the push for stricter gun laws, joined the debate and urged FedEx to stop its relationship with the NRA. And SimpliSafe, which sells home security systems, said the same.
Mass shootings have always rallied anger and calls for change to gun laws, but that feeling appears to have been magnified after the Parkland massacre. When the N.R.A. used a GIF of Parks and Recreation character Leslie Knope to thank spokeswoman Dana Loesch for speaking out at the Sunrise town hall, Amy Poehler was not happy.
In a statement on Friday, insurer Chubb said it told the NRA three months ago that it would "discontinue participation in the NRA Carry Guard insurance program under the terms of our contract".
Winter Olympics: USA's Kyle Mack lands silver in snowboarding big air
For Run 2, he moved on to the cab triple cork 1800 - one of the biggest tricks attempted in this contest - but couldn't land it. Competing in his third Winter Games, the 29-year-old came away with a career-best result, just six seconds shy of the podium.