A local chapter of a national group is calling on the store Cabela's to close a loophole they say allowed the Charleston shooter to obtain a gun with an incomplete background check.Members of the South Carolina chapter of Moms Demand Action for Gun Sense in America gathered outside the Greenville Cabela's Tuesday morning to hand-deliver a petition with 100,000 signatures. It asks the store to adopt the same policy that Wal-Mart and other retailers have adopted to not proceed with a gun sale until a background check is completed.“It is at their discretion, the way the law is written,” said Debby Edwards. “So we're just asking them to do the right thing and think about public safety.”According to the group, the loophole allowed Charleston shooter Dylan Roof to buy a gun after the required 72-hour wait period but before his background check was complete.“It’s horrific,” Erin Dando said. “As a mother, you feel for any mother that loses a child.”Dando said that same loophole has put 15,000 guns into the hands of dangerous people prohibited from owning them over the last five years.“Just because it may not be happening on my neighborhood block, it is up to me as a mother and a community member to stand up and speak out and make sure those survivors aren't the only ones that are in this fight,” Dando said.Moms Demand Action for Gun Sense in America’s partner organization, Everytown for Gun Safety, took out a full page ad in the Washington Post Tuesday asking Congress to address the issue. Until then, members said they will continue their grassroots effort to make a difference.“So we can reduce that number of 88 gun deaths a day,” said Dando. “And that when we walk into church, or a school, or a movie theater, that we won't have that fear of gun violence attacking our lives."Cabela’s did not respond to our calls for comment.