Three major car rental companies and a bank have ended discounts and deals for National Rifle Association members a week after the deadly mass shooting at a Florida high school.

Enterprise Rent-A-Car, Alamo Rent A Car and National Car Rental, all under the parent company Enterprise Holdings, have ceased discounts for NRA members.

The brands replied to tweets Thursday stating that the discount would end effective March 26.

Nebraska-based First National Bank of Omaha, the nation's largest privately owned bank holding company, has also announced that it will stop producing credit cards for the NRA.

"Customer feedback has caused us to review our relationship with the NRA," the company tweeted. "As a result, First National Bank of Omaha will not renew its contract with the National Rifle Association to issue the NRA Visa Card."

Some Twitter users who identified themselves as customers pledged to take their business elsewhere.

Spokesman Kevin Langin declined to say when the contract would expire and would not elaborate on what sort of feedback the company had received.

The announcement came after the progressive news website ThinkProgress listed the bank as a company that supports the NRA. ThinkProgress noted that First National Bank offered two NRA cards, each with a $40 bonus, and touted it as "enough to reimburse your one-year NRA membership!"

On Thursday, the bank website that advertised the NRA card had been disabled. A cached version of the site touted the card as "the official credit card of the NRA" and noted the benefits of membership.

The NRA has faced intense criticism following the Feb. 14 school shooting in Parkland, Fla., that left 17 people dead, the latest in a string of high-profile mass killings in the U.S.

An NRA spokeswoman referred questions Thursday to the group's licensing department. A phone message left with that office was not immediately returned.

A group that tracks the credit industry said the move could carry significant risks for First National Bank of Omaha.

"Many will applaud the move, but NRA members are famously loyal and the organization has shown itself as being very good at mobilizing its members," said Matt Schulz, a senior industry analyst at CreditCards.com. "However, banks are in the business of managing risks of all kinds, and First National clearly sees this as one they're willing to take."

First National Bank has banks in Nebraska, Texas, Colorado, Illinois, Iowa, Kansas and South Dakota.

The Associated Press contributed to this report.