<https://masterpiecearms.com/shop/ds9-magazine/#product>
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"9mm Magazine for our DS9 Pistol\r\n\r\nStandard wide body double stack mag design. Compatible with other 2011 style pistols.\r\n\r\nAvailable in 126mm (17 Round) and 140MM (20 Round)"
<https://masterpiecearms.com/shop/ds9-magazine/>