The bill introduced in the Pennsylvania House would have banned LCMs above a 15-round capacity. Neither the Senate bill nor the House bill was ever approved or implemented. As a result, Pennsylvania does not currently have any laws in place that ban large capacity magazines.
People have the right to openly carry firearms in Pennsylvania — but not into private stores and business that don't want the guns inside. Those businesses have the right to ask customers openly carrying guns to leave or, if they refuse, have them arrested or banned.