21 Round 9mm Premium 140mm Magazine with Alphalock Basepad | Black | Stainless | 3501-40310

ABOUT OUR PREMIUM 21 ROUND 140mm 1911 DS MAGAZINE. This 140mm premium magazine fits 1911 double-stack handguns. Engineered for those who refuse to compromise between aesthetics and absolute reliability, the Atlas Premium line is the pinnacle for the 1911 double-stack platform. Each magazine is built around our premium stainless-steel tubes, featuring performance geometry to ensure consistent feeding. Now featuring the toolless Alphalock Basepad, these magazines offer efficient maintenance, no matter the location. Expertly anodized in a range of finishes, these basepads offer both the high-end finish and function that Atlas is known for. In combination with the field-hardened magazine springs and injection molded followers these magazines deliver performance in every aspect. Whether you’re running a stage or on the range, trust the magazine built by shooters, for shooters. Designed for most modular 1911 double stack style pistols, including Staccato* and Springfield Prodigy. Features: Caliber: 9mm, Capacity: 21, Tube: 140mm, Follower: Lockback, Spring: 18% Overpower, Alphalock Basepad: Black. Compatibility: All Atlas Gunworks Pistols with a tactical or carry magwell; All known 1911 double stack modular pistols with no magwell or a Staccato Compatible Magwell; Staccato*: Staccato C2, Staccato P, Staccato XL, Staccato XC using a Staccato Magwell; Springfield: Prodigy 5″ 1911 DS, Prodigy 4.24″ 1911 DS. *Some Staccato Pistols made after August of 2024 have new frame dimensions, which prevent the use of all known aftermarket magazines.