South Carolina Gov. Henry McMaster signed a bill into law this week that will make it legal in the state for concealed weapon permit holders to open carry their firearms. McMaster announced on Twitter that he had signed into law the Open Carry with Training Act, which goes into effect on Aug. 15. “I will proudly support any legislation that protects or enhances a South Carolinian’s ability to exercise their 2nd Amendment rights, and that’s exactly what this bill does,” he wrote. The bill allows open carry of “concealable weapons,” defined as firearms with a length of fewer than twelve inches, for South Carolinians who undergo training and background checks in due course of obtaining a concealed weapon permit. The measure also waives the $50 concealed weapon permit fee. While the bill lets South Carolina concealed weapon permit holders to open carry their firearms in places of business, it does …