Never come up short on capacity with the 20-round 1911 DS extended magazine. A polymer base pad is attached the the 410 stainless steel body for ultimate durability. Intuitive finger grooves aid in magazine manipulation and extraction. 1911 DS magazines are cross compatible with Staccato 2011 platforms. This magazine is legal in the USPSA open and limited division. Specifications and Features: Round: 20 Material: Steel/Polymer Firearm Model: 1911 DS Caliber: 9mm