I live in Chicago, which has an AWB prohibiting possession of semi-auto shotguns with a fixed magazine capacity in excess of five rounds (that’s just one of a list of features, but the only one relevant to my question.). At some point, I would like to get an FN SLP, which has a capacity of six rounds. Would plugging the magazine to 5 rounds be sufficient? If not, would there be a more permanent mod that might be (have a gunsmith dimple the mag tube or something?). Thanks in advance.