OK I know that the Hi-caps from Century are 922(r) but are the lo-cap one as well? It seems like since they are 10 rnd rifles they are not subject to 922(r). Also would opening the mag well to take double stacks violate it? I'm not adding or removing parts and if it does violate then shaving down the slab of a grip would also be a violation wouldn't it? In both cases I'm keeping all the parts but removing some material.