It comes with one magazine. No other magazines are compatible From RIA website "To keep our firearms affordable, one magazine is included with each firearm purchase. Additional magazines for your firearm(s) can be purchased at Advanced Tactical ." mags here https://advancedtactical.com/products/Rock-Island-Armory-FS-MS-MAP1-Magazine-High-Cap-16-rnd-9mm

Hi Gee, Rock Island only ships this pistol with (1) Magazine. Factory extra Magazines can be found in stock for purchase at this link : https://gun.deals/search/apachesolr_search/812285021324?upc_only=1