Warne released a plus-five aluminum baseplate that expands Glock factory steel 15-round magazines for 43X and 48 pistols to twenty rounds without swapping the tube. Black anodized and locking, it includes a replacement spring, extra bottom mass for freer empty drops, and a finger notch, and works only with Glock-branded magazines sold separately. Produced in the United States under a lifetime warranty, it costs 54.99 dollars and will not ship into California, New York, or the other nine jurisdictions Warne names.