Springfield Armory Double Stack Black 1911 DS Prodigy 9mm Luger Handgun Magazine - 17 Rounds - Springfield Armory has released the new 1911 DS Prodigy. These magazines are designed to fit the 1911 DS Prodigy. Features include a 410 stainless steel body with a polymer baseplate and follower. This magazine holds 17 rounds of 9mm ammo. The 17-round 1911 DS magazine is constructed of 410 stainless steel for ultimate durability and features witness holes to aid in reloading. 1911 DS magazines are cross compatible with Staccato 2011 platforms. This magazine is legal in the USPSA open and limited division.