Perfect Zero 1911 DS 9mm 17-Round Magazine 9mm - 17rd - 126mm Stainless Steel Tube - Lockback Follower - Polymer Basepad The Perfect Zero 1911 Double Stack Magazine is made with the same tube, spring, and follower as the Atlas Gunworks Classic and Premium Magazines. The only differences are the polymer base pad and PZ laser engraving. Available in 17 and 20-round configurations. Recommended for shooters looking for an economical magazine that feeds reliably and locks back consistently in most modular 1911 double stack and 2011 style pistols. Compatible with Staccato and Springfield Prodigy. Backed by the Atlas Magazine Warranty. Atlas Gunworks Construction Same tube, spring, and follower as Atlas Gunworks Classic and Premium Magazines. The shared construction provides Atlas-grade feeding reliability at economical price point. 126mm Stainless Steel Tube 126mm stainless steel tube provides corrosion resistance and dimensional consistency. The stainless construction maintains reliable feeding across temperature and humidity variations. +18% Spring and Lockback Follower +18% spring provides increased tension for reliable feeding. Lockback follower engages slide stop on last round-signals empty magazine and locks slide open for fast reloads. Polymer Basepad Polymer basepad provides impact resistance during drops. PZ laser engraving identifies Perfect Zero origin while basepad protects tube on hard contact with ground. Wide Compatibility Compatible with all Atlas Gunworks pistols with a Tactical or Carry Magwell, and all known 2011 style and 1911 double stack modular pistols with no magwell or a Staccato Compatible Magwell. Staccato compatibility: C2, P, XL, XC (with Staccato Magwell). Springfield compatibility: Prodigy 5" 1911 DS, Prodigy 4.25" 1911 DS. Atlas Magazine Warranty Backed by the Atlas Magazine Warranty. The warranty reflects shared construction quality with Atlas Gunworks Classic and Premium Magazines. The Perfect Zero 1911 DS 17-round delivers Atlas-grade feeding-126mm stainless construction with lockback reliability for 2011 and double stack competition performance. Specifications: Manufacturer: Perfect Zero Model: 1911 DS 126mm Magazine Caliber: 9mm Capacity: 17 rounds Tube Length: 126mm Tube Material: Stainless Steel Spring: +18% Follower: Lockback Basepad: Polymer Engraving: PZ Laser Compatible Platforms: All Atlas Gunworks Pistols (with Tactical or Carry Magwell), All Known 2011 Style and 1911 Double Stack Modular Pistols (No Magwell or Staccato Compatible Magwell) Staccato Compatibility: C2, P, XL, XC (with Staccato Magwell) Springfield Compatibility: Prodigy 5" 1911 DS, Prodigy 4.25" 1911 DS Warranty: Atlas Magazine Warranty